BOSSMAN (BDS422) 4-22mm HSS Steel Step Cone Titanium Drill Bit

 

•Made by HSS with Heat Treatment and Titanium Nitride Coating

•Increases the hardness and makes the bit last up to 4-5times longer than ordinary drill bit.

•Drill round holesin most metals plastic, wood and etc.

•Designed to auto deburr the hole cut

•Use on electric drills and press drill