Irwin® HSS Pro TiN Coated Drill Bit 11.0mm OL:142mm WL:94mm other_numbers_SUP-07317S The Makita D-30667 Bit Set

The Makita D-30667 Bit Set Counter Display contains 12 x D-30667 Bit Sets

Crafted for both professional and DIY enthusiasts

Column Diameter: 80mm

made with a metal body and bezel

thickness of steel: 1

Irwin® HSS Pro TiN Coated Drill Bit 11.0mm OL:142mm WL:94mm other_numbers_SUP-07317S The Makita D-30667 Bit SetThe Irwin HSS Pro TiN drill bits are primarily designed for drilling metal and harder, tougher alloys. Compared to traditional HSS twist drill bits, speed can be increased by 40 60% and feed by 10 20% without reducing the life time of the drill bit significantly. TiN is also a poor conductor of heat, so the heat generated during the drilling process is diverted into the chips and coolant and less into the drill bit. These drills have a 135 split point