Process Treatment: Titanium coated surface prevent rusting,which increase the hardness of the drill bit and reduces heat buildup, make the twist drill bit more wear-resisting for longer life
The fast cutting point at 135° is centered automatically for quick penetration with minimal pressure. This drill kit fulfills all your needs with various size specifications for Wood, Cast Iron, Aluminum Alloy, Plastic, and Fiberglass.
Premium Material: Manufactured from high speed steel for strength and durability