Duo-Fast Wide Crown Staple, Crown Width: 1/2 in, Leg Length: 5/16 in, Point Type: Chisel, Material Gauge: 20 ga, Steel, Galvanized, Suitable for: Duo-Fast HT550 Hammer Tacker, CS5000 Compression Stapler, SureShot 5020DLAF Stapler, EWC5018A Electric Stapler