#N87 series drill bits: Magnum Super Premium drill bits have a substantially longer cutting life. They also cut harder materials and stop drill walking. They run cooler and use less torque. Great bits because they stop chuck slippage.
Norseman Type 175-AG, Mechanics Length Drills (Extra Long), 3 Flats on Shank, Magnum Super Premium, Black & Gold Heavy Duty 130 degree point
