Bostitch powerslam staples 681012mm packs of 5000 bostitch 501912z this pack of 5000 powerslam staples 12mm from bostitch are durable staples with a galvanised finish designed for roofing felt tar paper insulation carpet pads and plastic sheeting compatible with the powerslam hand tacker bostitch 501912z powerslam staple 12mm pack 5000