Stanley TRA708SST 1/2-Inch HD Stainless Steel Narrow Crown Staple For corrosive or marine environments and upholstery work Color-coded packaging makes size and product selection a cinch Sturdy plastic packaging reduces staple breakage Heavy Duty Stainless Steel fits TR100, TR200, TRE500 series, PHT150, PHT250 and Arrow T-50 Limited Lifetime Warranty For corrosive or marine environments and upholstery work Color-coded packaging makes size and product selection a cinch Sturdy plastic packaging reduces staple breakage Heavy Duty  Stainless Steel   fits TR100, TR200, TRE500 series, PHT150, PHT250 and Arrow T-50 Limited Lifetime Warranty