This is a replacement set of all 7 dies and punches included in the Power Punch Plier. 

Sizes included are:  3/32" (.094", 2.38mm), 1/8"(.125", 3.17mm), 5/32" (.156", 3.96), 3/16" (.188", 4.78mm) , 7/32" (.219", 5.56mm), 1/4" (.25", 6.35mm), 9/32" (.281", 7.14mm) .

If your tool ever gets abused or just tired out and you break one of the dies or punches, you can buy this replacement part.