It can help you easily obtain the required sharpening angle and reach the edge of the tool. Using this grinding jig, all standard grinding angles can be obtained by the projection tool. Made of durable carbon steel with anti-rust function and high hardness. Suitable for chisels, flat shovel, wood chisels, planers, milling cutters, more serious tools, iron planers, excavators, etc. Thickened screws and deepened wire make it stronger and more slip resistant. Easily grasp the angle of the sharp reinforcement tool, and make the sharp reinforced blade sharp and smooth. The center of gravity is stable and non-slip. Adjustable clamping width, from planing iron/chisel to 86mm/50mm maximum width. Designed together with the roller, it keeps the same direction when grinding, and is non-slip smooth. Material: carbon steel Color as shown Size: 100 * 41 * 35mm Internal clamping range: 0-50mm External clamping range: 36-86mm Package Included: 1*Manual sharpener note: 1. Due to manual measurement, please allow 1-3mm difference, thank you 2. Due to the difference between different monitors, please note that the picture may not reflect the actual color of the item.