Spot Nails Spot Nails 35509 20 Gauge Staples with 1/2-inch Crown and 9/16-inch Leg similar to Duo-Fast 5018C 5,000 per Box Interchanges with Duo-Fast 5018C 20 Gauge with 1/2-inch Crown 5, 000 staples per box Electro-Galvanized