The Hilti 3/4" pins are specifically designed for use with the GX 120 and GX 3 powder-actuated tools. As brand new original Hilti pins, they ensure high quality and compatibility with these models. These pins are essential for securely fastening items in various industrial and construction applications, making them a reliable and durable choice for professionals in need of reliable powder-actuated tools. Comes with GC 41 gas cartridge.