Irwin Unibit #9 2-Step Drill Bit - 7/8 and 1-1/8-in - High Speed Steel - USA Made Knock Out Bit Nicholson These collets came from a

These collets came from a long closed Emco Unimat dealer

Excellent results when turning very hard woods

Average pull force is 107lbs and the maximum pull force is 215LBS ( i have no way to measure this so i am providing the numbers from the company website only and cannot verify them)

10-24 and copper wire

more accurate cuts

Irwin Unibit #9 2-Step Drill Bit - 7/8 and 1-1/8-in - High Speed Steel - USA Made Knock Out Bit Nicholson These collets came from aIrwin Unibit #9 2 Step Drill Bit 7 8 and 1 1 8 in High Speed Steel USA Made Knock Out Bit About this item Single flute cutting edge for greater control through steps SpeedPoint tip penetrates fast and helps prevent walking Hex shank helps prevent slipping in the drill chuck IRWIN Unibit step drill bits are ideal for drilling holes into thin materials, such as stainless steel, copper, brass, aluminum, plastic and laminates Drills 7 8 inch and 1 1 8