The Lang 950 Gasket Hole Punch Set is a 11-piece set designed to cut holes and internal radii in gaskets and other soft materials such as rubber, lead foil, linoleum, felt fiber, and other similar materials. The set includes a long driving mandrel and ten punches sized 1/4", 3/8", 1/2", 5/8", 7/8", 5/16", 7/16", 9/16", 3/4", and 1". The punches are made of high-quality steel and are heat treated for durability. The set is also includes a storage case for easy transport and storage.