GT-6 Hard Concrete Pin and Fuel Cell Combo Pack for use with ICCONS GT-3, GT-6 and Powers Gas Tools (Trak-It C3, Trak-It C5). These handy packs are fitted with 1000 pins and a fuel cell so you and simply grab and go! GT-6 ballistic point collated pin design enables the pin to penetrate hard materials with less force, while the strengthened shank greatly reduces the possibility of pin collapse. These hard concrete ballistic point pins are ideal for fixing to steel and hard concrete.