The Eastwood 14 Gauge Hand Punch is a classic sheet metal tool every fabricator needs in his tool box. This punch makes quick work of spot weld and rivet holes and produces a clean burr-free hole. The 1.75\" throat depth allows you get get into a deep flange an put a hole right where you need it. 1.75” Throat Depth allows punching into the center of a 3.5” work piece Compound Leverage Action greatly amplifies punching power Max. Aluminum Thickness: 12 Ga. Max Steel Thickness: 14 Ga. Max Stainless Thickness: 16 Ga. The punch & die sets included are: 3/32\", 1/8\", 5/32\", 3/16\", 7/32\", 1/4\", 9/32\".