Stanley TRA708T Sharpshooter 1/2-Inch Leg Length Staples, Steel (1000 Count) Perfect for insulation jobs Can be used for carpet underlaying and roofing felt For Use with Stanley Bostitch SharpShooter Tacker (TR150) Perfect for insulation jobs For Use with Stanley Bostitch SharpShooter Tacker (TR150) For heavy duty stapling jobs such as insulation, carpet under laying and roofing felt Color-coded packaging makes size and product selection a cinch For heavy duty stapling jobs such as insulation, carpet under laying and roofing felt Color-coded packaging makes size and product selection a cinch Sturdy plastic packaging reduces staple breakage Heavy Duty  Narrow Crown  fits TR100, TR200, TRE500 series, PHT150, PHT250 and Arrow T-50 Limited Lifetime Warranty