Maun imperialmetric wad punch kits maun 1000 05 this metric wad punch kit from maun is the ideal collection of pieces for cutting round holes materials suh as rubber leather and plastic the kit comprises of a single wad punch handle onto which you can screw a series of nine interchangeable punches manufactured to a high standard with handles that are blackened and punches which are heat treated and chemically blacked the handle should be struck with a hammer or mallet onto a wooden block