PORTER-CABLE MS200 1-Inch to 2-Inch 16-Gauge 7/16-Inch Medium Crown Stapler Drives Senco-type 16-gauge 7/16-inch crown staples from 1 inch to 2 inches long Powerful piston with Teflon ring design that prevents cylinder bore scuffing Open top-load magazine with push-button follower accommodates two 70-staple strips or three 50-staple strips Selectable trigger features restrictive or contact actuation mode Quick-release nosepiece for easy jam removal