The Simpson Strong-Tie GTS is a gas-actuated 1/4" threaded stud designed to fasten both permanent and temporary building components to concrete, with the ability to easily remove the attachments. The versatile GTS consists of a 1/2" x 1/4-20-threaded stud and a 3/4" x 0.127"-diameter smooth shank. The GTS is for high-volume applications and can be used with common powder-actuated tools for fastening into harder substrates (structural steel or extra-hard concrete) when required.