Irwin 15101ZR Unibit Unibit Step Drill Bit, 1/8 to 1/2 Inch By 3-1/4 in Oal, 1-Flute, 1/4 in Dia Shank, Hex Shank

Step drill bits titanium hole size 1/8 inches -1/2 # of hole steps=13 Self starting bit features single flute cutting edge for greater control through steps; three flatted shank prevents slipping in drill chuck. SpeedPoint tip penetrates faster and prevents walking in applications such as drilling holes into stainless steel, copper, brass, aluminum, plastic, laminates and other thin materials up to 1/8 inches thick.

Self-starting bit features single flute cutting edge for greater control through steps. Three flatted shanks prevent slipping in drill chuck. SpeedPoint tip penetrates faster and prevents walking in applications such as drilling holes into stainless steel, copper, brass, aluminum, plastic, laminates and other thin materials up to 1/8 in thick. Self starting bit features single flute cutting edge for greater control through steps; three flatted shank prevents slipping in drill chuck. SpeedPoint tip penetrates faster and prevents walking in applications such as drilling holes into stainless steel, copper, brass, aluminum, plastic, laminates and other thin materials up to 1/8" thick.