1 - 1/8 - 1/2 Part Number 68491
1 - 3/16 - 1/2 Part Number 68501
1 - 3/16 - 7/8 Part Number 68511
Special Axial and Radial flute design increases work piece penetration. Dual flute construction drills clean accurate holes in thin materials, quickly and easily. Titanium Nitride coated with 3-flats on shank. Titanium nitride coated tools last six times longer than uncoated tools. Cutting edge stays sharper longer. Titanium nitride coating reduces friction.