For use in most Ramset, Hilti, Simpson, Powers, Remington and other powder actuated tools. Available pre tied to ceiling grid wire. These Ramset SPC Pins offer excellent results in hard concrete especially when teamed up with the Ramset Viper. For the toughest concrete, try the SPC114 ceiling clip.Designed for difficult overhead applications, eye and ear protection at all times. If you aren't sure which power level to use then start with a lower level and work your way up. And remember that 1" of penetration into concrete is the rule of thumb. And yes, with the proper power level and correct length you can fasten to structural steel. But beware the noise and the recoil.