Stainless Steel 410 J1 Drop Forging, Used to make a Haywire Twist, Used to form single strand wire, Choice of 3 diameters, Internally spring loaded for easy operation, Ergonomic hand finished design, Designed for hand/grip comfort, Lightweight, Designed to fit the Toit Leather Sheath (Sold Separately), Environmentally friendly product, no rubber/plastic/silicone handle, All metal design No plastic to fall off, shrink or get damaged, Highly polished surface finish