
Product Overview
Made of high speed steel,high hardness and good toughness and corrosion resistance. not easily to damage. Accurate drilling of holes for hinges, handles. Quickly and easily change from one bit to the next.

Made of high speed steel,high hardness and good toughness and corrosion resistance. not easily to damage. Accurate drilling of holes for hinges, handles. Quickly and easily change from one bit to the next.