These heavy duty Straight Cut Tin Snips have a capacity of cutting 18 gauge cold rolled sheet metal and 22 gauge stainless steel sheet metal. These snips feature a center adjustment bolt that is threaded into the bottom blade. This keeps blades in adjustment the longest - they exceed 30,000 cycle test cuts of 18 gauge cold rolled sheet steel before they need re-adjustment. Designed for years of use and versatile for left or right handed users, these tin snips are a must have!