Made of fine quality material, practical, easy to install and use, wide application range, has a long service life. Features: Made of fine quality aluminium alloy, solid, wear-resistant, rust-proof and practical. The design of the roller offers more options and moves back and forth unrestricted during the sharpening process, keeping the same direction, non-slip, smooth and safe. You can adjust the clamping width by rotating the screw-cap. The clamping width range is 8~80mm (0.3~3.1"). The maximum clamping width of the plane iron is 77mm, and the maximum clamping width of the chisel is 47mm. Suitable for wood chisel, planer, blade, graver, carving cutter, plane iron, flat chisel edge sharpening. Specifications: Material: aluminum alloy Main color: blue Clamping width range: 8~80mm / 0.3~3.1in Package size: 100 * 80 * 60mm / 3.9 * 3.1 * 2.4in Package weight: 180g / 6.3ounce Package List: 1 * Chisel Honing Guide