This item is PUNCH, 17507 1″ KNOCKOUT 17507. This product is used for hand-tool-center-punches. This product manufacture by Japan.
From the Manufacturer
Rigid 17507 1-inch Knockout Punch is a precision-ground-3-point punch. The 1-inch punch can come in a set as well as individually. The 1-inch Punch has an actual hole size of 1-3/8-inch and weighs 3/4 pound.
