IRWIN, 10231, Step Drill Bit, 1/8 in to 1/2 in, High Speed Steel, Hex Shank

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The IRWIN UNIBIT HSS Fractional Self-Starting Step Drill Bit is made of high speed steel. Hole sizes are permanently laser-etched on the inside of the flute and will not wear away for easy identification throughout the life of the bit. The bit features a quick change hex shank that secures easily in the drill chuck.Features Also available with (tin) coating for longer life Geometry of single-flute cutting edge drills true, round holes and provides maximum step control. Ideal for drilling holes into thin materials such as stainless steel, copper, brass, aluminum, plastic and laminates Hex shank prevents slipping in drill chuck New speedpoint tip penetrates faster than previous unibits and prevents walking Size Range: 1/8 in - 1/2 in Weight: 0.134 lbs Length: 3.100 in Width: 0.800 in Height: 6.100 in Material: High Speed Steel Shank Type: Hex Coating: Tin (optional) Country of Origin: United States Show more