Stanley TRA704T, Heavy-Duty Narrow Crown Staples 1/4", 1, 000 Pack For heavy duty stapling jobs such as insulation, carpet underlaying and roofing felt. Color-coded packaging makes size and product selection easy.For use with: TR100 series, TR200 series, TRE500 series, PHT150, TR60; Arrow ET-50, ET2025, ETC50, ETF50BN, ETN-50, T-50PBN, T55, T55C, T-50, T55, HT50A; Powershot 5700, 8000