Description:

Made of HSS, sturdy and durable, not easy to break, long service life.. Size: M3.2 (3.2*5.9mm), M4.2 (4.2*7.4mm), M5.2 (5.2*8.9mm), M6.2 (6.2x10.4mm), M8.2 (8.2x13.4mm), M10.3 (10.3x16.8mm), M12.4 (12.4x18.8mm). High toughness, abrasion resistance, high-speed and accurately cutting, can processing directly or fine processing to the heat treatment mold.. Reducing the number of tool changes, improve machine actuator movement rhythm, save mold making time, perfect for drilling copper, aluminum, tool steel, cast iron, etc.. Reducing the number of tool changes, improve machine actuator movement rhythm, save mold making time, perfect for drilling copper, aluminum, tool steel, cast iron, etc..