Standard tip from BC20 carbide, besides suitability and safety are assured, optimized efficiency is secured when drilling;

High quality steel deployed,  welding&heat treatment are fully done by German imported machine, keep strong body and longer life;

Pretty surface finishing making it attactive, your best choose for sales promotion, Ni/Cr/Copper plated finishing available.

Strongly recommended to use in Concrete, Brick, natrual &artificial rocks, also in mable, granite and other hard materials