Tacklife PSD4 Step Drill Bit Set
- Spiral groove design makes cutting more smoothly and easily
- Cobalt added reduces friction and lasts longer than those which does not contain cobalt bits
- The sharpness and titanium coating ensure easily cut through most sheet metal,plastic and some other materials with ease
- Laser marking makes the size more clear;X-type openings design to facilitate the removal of cutting waste when drilling
- Double cutting blades design enables a faster and smoother cutting; High speed steel for longer service life
- Brass body has a deeply knurled surface for nonslip control.