Tivoly High Speed Steel Step Drill Bit 4mm x 30mm

The Tivoly HSS step drill bit is High-performance drill bit for incredibly fast and intensive drilling of high-strength steels, thanks to its geometry and its Titanium aluminium nitride coating. It enables the simple self-centring of the drill bit on the

Titanium aluminium nitride coating
Tri-flat shank
High-speed steel