Description:7pcs M3-M12 HSS Countersink Cutter Countersink Drill
Specification:Materials: HSSAL super hard high speed steel
Size: M3.2,M4.2,M5.2,M6.2,M8.2,M10.3,M12.4
Hardness: HRC65-68°
Type: countersunk head cutter
Whether It Is Coated: NO
Applicable Machine Tools: milling machine
Features:-HSSAL super hard high-speed steel material, hardness of HRC65 ~ 68 °, suitable for processing steel, castings, copper and aluminum pieces.
-Model Description: 4.2x7.4 said front guide column diameter 4.2MM, blade diameter 7.4MM.
Package Included:7 x flat countersink
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