Crescent Wiss Quick Change Trimmimg Knife - NT3QC12 CLAF-UM165M The hollow punch sets can

The hollow punch sets can be paired and inter-changed very quickly and easily by using the patented lock in chuck system

1/4" Hex shank fits most power and impact drills

Neck diameter 9mm

30mm Posistop Chuck Stop

They can produce holes three times faster and cleaner than hole saws in sheet metal and have dramatically extended tool life too

Crescent Wiss Quick Change Trimmimg Knife - NT3QC12 CLAF-UM165M The hollow punch sets canIncludes 3 blades Swing out blade holder Sturdy metal construction Non slip rubber grip String cutter cuts string with hook when blade is retracted 18mm Replacement blades for WSBK18 Protective storage cage included