UNIBIT #9 STEP DRILL
2 step Unibit drill drills 7/8" and 1-1/8" holeSingle-flute cutting edge3 flatted shank prevents slipping in drill chuckIdeal for drilling holes in thin materialsUse in copper, stainless steel, brass, aluminum,plastic or laminatesMaximum material thickness 1/2" & 3/4"