The M640 platform is the first choice when low cutting forces are required
The M640 platform is the first choice when high productivity, superior finish, and soft cutting performance are a priority. Featuring six effective cutting edges and a streamlined body design, this easy-to-use tool is ideal even for low-power machines.
- High positive rake angle provides extremely low cutting forces.
- Easy to use for fast and accurate indexing.
- Through tool coolant
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Workpiece Material
Workpiece Material
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P Steel (28)
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P0Low-Carbon Steels, Long Chipping C < .25%; <125 HB; <530 N/mm^2 UTS (24)
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P1Low-Carbon Steels, Short Chipping C < .25%; <125 HB; <530 N/mm^2 UTS (28)
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P2Medium and High Carbon Steels C < .25%; <220 HB; <25 HRC; >530 N/mm^2 UTS (28)
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P3Alloy Steels & Tool Steels C > .25%; <330 HB; <35 HRC; 600-850 N/mm^2 UTS (28)
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P4Alloy Steels & Tool Steels C > .25%; 350-420 HB; 35-43 HRC; 850-1400 N/mm^2 UTS (28)
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P5Ferritic, Martensitic, and PH Stainless Steels <330 HB; <35 HRC; 600-900 N/mm^2 UTS (28)
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P6High Strength Ferritic, Martensitic, and PH Stainless Steels 350-450 HB; 35-43 HRC; 900-2400 N/mm^2 UTS (28)
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M Stainless Steel (28)
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M1Austenitic Stainless Steel 130-200 HB; <600 N/mm^2 UTS (28)
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M2High Strength Austenitic Stainless and Cast Stainless Steels 150-230 HB; <25 HRC; >600 N/mm^2 UTS (28)
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M3Duplex Stainless Steel 135-275 HB; <30 HRC; 500-1200 N/mm^2 UTS (28)
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K Cast Iron (27)
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K1Gray Cast Iron 120-290 HB; <32 HRC; 125-500 N/mm^2 UTS (27)
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K2Low and Medium Strength CGI and Ductile Irons 130-260 HB; <28 HRC; <600 N/mm^2 UTS (26)
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K3High Strength Ductile and Austempered Ductile Iron 180-350 HB; <43 HRC; >600 N/mm^2 UTS (26)
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N Non-Ferrous Materials (15)
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N1Wrought Aluminum (15)
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N2Low-Silicon Aluminum Alloys and Magnesium Alloys Si <12.2% (15)
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N3High-Silicon Aluminum Alloys Si >12.2% (15)
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S High-Temp Alloys (24)
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S1Iron-Based, Heat-Resistant Alloys 160-260 HB; 25-48 HRC; 500-1200 N/mm^2 UTS (24)
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S2Cobalt-Based, Heat-Resistant Alloys 250-450 HB; 25-48 HRC; 1000-1450 N/mm^2 UTS (24)
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S3Nickel-Based, Heat Resistant Alloys 160-450 HB; <48 HRC; 600-1700 N/mm^2 UTS (24)
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S4Titanium and Titanium Alloys 300-400 HB; 33-43 HRC; 900-1600 N/mm^2 UTS (24)
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H Hardened Materials (14)
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H1Hardened Materials 44-48 HRC (14)
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H2Hardened Materials 48-55 HRC (9)
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H3Hardened Materials 56-60 HRC (9)
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CN (12)
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DE (18)
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GB (1)
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SG (2)
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US (2)
Applications
Applications
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Face Milling (9)
Cutting Diameter
Cutting Diameter
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1.26 in (1)
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1.969 in (1)
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2.0 in (1)
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2.48 in (1)
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3.0 in (1)
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3.15 in (1)
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3.938 in (2)
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4.921 in (1)
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Cutting Diameter
Cutting Diameter
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32.0 mm (1)
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50.0 mm (1)
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50.801 mm (1)
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63.0 mm (1)
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76.2 mm (1)
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80.0 mm (1)
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100.0 mm (2)
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125.0 mm (1)
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Maximum Cutting Diameter
Maximum Cutting Diameter
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38.401 mm (1)
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56.401 mm (1)
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57.151 mm (1)
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69.4 mm (1)
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82.575 mm (1)
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86.4 mm (1)
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106.4 mm (2)
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131.4 mm (1)
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Maximum Cutting Diameter
Maximum Cutting Diameter
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1.512 in (1)
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2.221 in (1)
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2.25 in (1)
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2.732 in (1)
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3.251 in (1)
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3.402 in (1)
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4.189 in (2)
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5.173 in (1)
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Cutting Length
Cutting Length
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4.801 mm (7)
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4.875 mm (2)
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Cutting Length
Cutting Length
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0.189 in (7)
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0.192 in (2)
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Reach
Reach
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1.5 in (1)
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1.575 in (3)
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1.969 in (3)
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2.0 in (1)
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2.48 in (1)
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Reach
Reach
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38.1 mm (1)
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40.0 mm (3)
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50.0 mm (3)
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50.801 mm (1)
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63.0 mm (1)
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Tool Cutting Edge Angle
Tool Cutting Edge Angle
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58.0 (9)
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Connection Style
Connection Style
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A-Socket Head Cap Screw (4)
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B-Cutter Retention Screw (4)
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Weldon (1)
Number of Flutes
Number of Flutes
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10 (1)
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4 (2)
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5 (2)
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6 (1)
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7 (2)
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8 (1)
Cutting Edges Per Insert
Cutting Edges Per Insert
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3.0 (15)
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6.0 (30)
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Over All Length [L]
Over All Length [L]
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1.5 in (1)
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1.575 in (2)
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1.969 in (3)
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2.0 in (1)
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2.48 in (1)
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3.938 in (1)
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Over All Length [L]
Over All Length [L]
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38.1 mm (1)
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40.0 mm (2)
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50.0 mm (3)
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50.801 mm (1)
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63.0 mm (1)
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100.0 mm (1)
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Corner Radius
Corner Radius
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0.035 in (11)
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0.038 in (34)
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Corner Radius
Corner Radius
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0.9 mm (11)
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0.976 mm (34)
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Application
Grade Of Cutting Tool
Grade Of Cutting Tool
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THM (10)
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THM-U (10)
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TN2510 (9)
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TN5515 (9)
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TN6501 (9)
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TN6502 (9)
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TN6510 (11)
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TN6520 (11)
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TN6525 (13)
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TN6540 (11)
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TN7525 (9)
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TN7535 (9)
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WK15CM (11)
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WP25PM (13)
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WP35CM (9)
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WP40PM (13)
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WS30PM (10)
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WS40PM (13)
Hand Of Tool
Hand Of Tool
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R (9)
Wiper Insert
Wiper Insert
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N (20)
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Y (7)
Front-End
Neck Diameter
Neck Diameter
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0.976 in (1)
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Neck Diameter
Neck Diameter
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24.8 mm (1)
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Center Cutting
Center Cutting
Insert Geometry
Shape
Shape
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H-HEXAGON 120 (27)
Insert IC Size
Insert IC Size
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10.9 mm (5)
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10.976 mm (14)
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11.0 mm (2)
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11.15 mm (6)
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Insert IC Size
Insert IC Size
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0.429 in (5)
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0.432 in (14)
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0.433 in (2)
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0.439 in (6)
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Chip Breaker CBMD
Chip Breaker CBMD
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GD (20)
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LD (7)
Cutting Tool Material
Cutting Tool Material
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H W (27)
Tolerance Class
Tolerance Class
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G (21)
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P (6)
Back-End
Connection Type
Connection Type
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CYLINDRICAL (1)
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SHELL MILL (8)
Back-End Diameter
Back-End Diameter
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19.05 mm (1)
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22.0 mm (2)
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25.401 mm (1)
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27.0 mm (1)
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32.0 mm (3)
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40.0 mm (1)
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Back-End Diameter
Back-End Diameter
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0.75 in (1)
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0.866 in (2)
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1.0 in (1)
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1.063 in (1)
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1.26 in (3)
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1.575 in (1)
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