Designed for heavy duty use in construction, this pack of 1,000 Stanley SharpShooter Heavy Duty Staples is the ideal choice for a range of demanding tasks. With a more discrete narrow crown and 12mm size, their durable design makes them suitable for installing insulation, carpet underlay and roofing felt. This Type G staple is designed to fit a range of staplers including the TR100, TRE500 series and Arrow T-50. Heavy duty Type G staples for construction Designed for insulation, carpet underlay and roofing felt Narrow crown for discrete installation Durable metal material ensures quality Fits TR100, TR200, TRE500, PHT150, PHT250 and Arrow T-50 staplers Size: 12mm (1/2in) Pack of 1,000 staples