A set of 3 stainless steel stepped taper drill bits, 4-12/20/32 mm titanium alloy tapered triangular drill bits, hexagonal shank, 40, 52 and 75 mm.

This is a new type of large-diameter high-speed steel tapered drill bit, made of high-quality steel and coated with a titanium coating to effectively reduce friction and heat generation. Suitable for drilling various materials, including steel, brass, wood, and plastics. The drill bit is made of M42 high-speed steel and coated with a titanium coating to reduce friction and heat generation. No pre-drilling or pilot hole is required. Deburring is automatically removed during drilling. Suitable for thin metals, steel, aluminum, copper, brass, fiberglass, PVC, and other materials. Color: Gold. Sizes: 4-32 mm, 4-20 mm, 4-12 mm.