HVAC and sheet metal pros agree, when making long, straight cuts in thinner gauge sheet metal, tinner snips are the way to go. They're a simple, economical and durable cutting solution for many sheet metal and HVAC applications. New Crescent Wiss lightweight aluminum and drop forged steel tinner snips are the most durable we've ever made with precision ground cutting edges and an adjustable pivot bolt. Available in a wide selection of styles and sizes there's a perfect Crescent Wiss snip for every job.