Material: TC4 titanium alloySize: 121mm * 50.5mm * 9.2mmFinger hole width: 24mm, 22.8mm ,22.8mm, 24mmWeight: about 72.5gMade of TC4 titanium alloy, this self-defense and window-breaking tool is made through a precision one-piece molding process. It is both high-strength and ultra-lightweight. Its uniqueness lies in that after multiple manual high-temperature titanium burning processes by craftsmen, the surface presents a unique color texture, which is not only beautiful, but also adds to its unique charm as a self-defense tool. This tool is not only light and easy to carry, but can also quickly break windows and escape at critical moments, and is also a solid backing for your travel safety.