Arrow T50 1/2" staples with 1,250 staples/pack are the world’s best-selling heavy-duty staple platform. Made to deliver exceptional holding power, these staples are used for all heavy-duty stapling applications – from installing insulation, house wraps, and roofing underlayment to upholstering fine furniture and window treatments. A true workhorse of a fastener, Arrow T50 staples are made to precise specifications on state-of-the-art equipment. They have precision points that allow them to penetrate deep into the substrate, ensuring firm, durable retention when nailed to wood, fabric, carpet or other materials.Works with T50, T50X, T50HS, 5700, T50PBN, HT50, , HTX50, T50ACD, T50DCD, T50AC, and PT50, T50RED2.