Blade edge made of high-quality cobalt high-speed steel SKH-59 (M42)and tough spring steel that is welded by electron beam to form a bimetal structure provide acute sharpness.
The variable pitch reduces vibration when drilling large diameters.
ข้อมูลสินค้า
Cutting Diameter (mm) : 6
Total Length (mm) : 85
Compatible Model : Straight shank 55 to 77mm, SDS-plus shank 65mm