5Pcs HSS Cobalt Hole Large Metal Step Drill Bit Set Titanium Cutter Cone 50 Size

Features:
1. 5pcs step drill bits enable 50 sizes - each step drill bit can drill several bore diameters. It's can work as 50pcs twist drill bits. You don't have to replace drill bit constantly for different bore sizes.
2. classic and sturdy high-speed steel with titanium coating for proven capability and durability in drilling holes in plastic, aluminum, copper, stainless steel and many other types of the metal sheet.

Specification:
Our step drill bits are constructed from traditional HSS combined with a titanium coating to make them even more durable.
This also proves the capability and durability of the drill to last through multiple drilling on surfaces such as: plastic, aluminum, copper, stainless steel, and so much more.
Increased Cutting Speed
The split point tip is at 135 degrees which allows you to cut faster throughout multiple uses.
This also ensures that you get sharp cutting on a wide variety of materials.