Product Description The Arrow Fastener 600-series genuine heavy-duty 1/2-inch (leg length) by 1/2-inch (crown size) staple is a genuine Arrow fastener,and each box contains 1,000 pieces. For use in Swingline/Desa 800,800X,900,1000,10060,31600,31800,34201,and 34302,Master mechanic models 174839,345025,136150,TRE-50MM,and TRE-300MM,Sears' Craftsman models 68477,68418,6843,3846,68642,68423,68471 and 68481,Stanley-Parker models TR70,TR75,TR80,TRE100,TRE50 and TRE200,and Ace Hardware models 22084,22087 & 27175,Black & Decker Models 9700 and 9. From the Manufacturer The Arrow Fastener 600-series genuine heavy-duty 1/2-inch (leg length) by 1/2-inch (crown size) staple is a genuine Arrow fastener,and each box contains 1,000 pieces. For use in Swingline/Desa 800,800X,900,1000,10060,31600,31800,34201,and 34302,Master mechanic models 174839,345025,136150,TRE-50MM,and TRE-300MM,Sears' Craftsman models 68477,68418,6843,3846,68642,68423,68471 and 68481,Stanley-Parker models TR70,TR75,TR80,TRE100,TRE50 and TRE200,and Ace Hardware models 22084,22087 & 27175,Black & Decker Models 9700 and 9. READY FOR ACTION: These wide-crown staples are used for all heavy-duty stapling applications: from installing insulation,housewraps,and roofing underlayment to upholstering fine furniture,installing window treatments,and making crafts USE THE RIGHT TOOL: These staples are designed to be used with the a variety of staple guns,pneumatic tools,and hammer tackers; Check your tool to make sure it can support staples with 1/2-inch crown width HIGH-QUALITY CONSTRUCTION: The heavy-duty steel construction is designed for durable long-term holding DRIVES DEEP: These staples feature precision points that drive deep into the base materials to ensure a firm,lasting hold when stapling into wood,fabric,carpet,or other materials DIMENSIONS AND : Leg length 1/2 Inch; Crown width 1/2 Inch; Includes 1000 staples.