Titanium Coated Step Drill 4-22MM

Made by HSS With heat treatment am.
Titanium Nitride coating.
Increases the hardness and mass bits last up to 4 5 times longer than S smary drill bits.
Drill round holes in most metals, plastic, wood, and etc.
Self-starting tips will not skid, no need for center punching or pilot drill.
Designed to auto deburr the hole cut.
Used on electric drills and drill presses.

What’s in the box
1 x Step Drill 4-22mm