Made of high quality material, practical, easy to install and use, wide application range, has a long service life. Features: Made of high quality aluminum alloy, strong, wear-resistant, rust-proof and practical. The roller design provides more options and moves without restriction 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 flat iron is 77mm and the maximum clamping width of the chisel is 47mm. Suitable for wood chisel, planer, blade, chisel, carving iron, flat 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 Sharpening Guide