Air Locker T50 20 Gauge 1/2 Inch Long x 3/8 Inch Crown Galvanized Fine Wire Steel Staples, PK 1000 AT50-12 | Zoro
Arrow T50 1/2 in. Stainless-Steel Staples (1,000-Pack) 508SS1 - The Home Depot
Gardner Bender 1/2 in. Metal Staples (5000-Pack) MS-950B - The Home Depot
Amazon.com: meite 21 Gauge 1/2-inch Crown 304 Stainless Steel Staples with 1/2-inch Leg Similar to Fasco and 80 Series 10,000 PCS/Box (1) : Industrial & Scientific