Description: Just place the sandpaper over the corresponding slot of the repairer and sand it back and forth in one direction according to the arc. Square groove, the edger is polished on the front. U groove, the edge of the edger is polished. The general leather processing heads are very small, which is inconvenient to master the direction. This tool can solve your troubles. Rail slots design can help you polish your tools better. Suitable for 1-6mm chamfering. This sharpener guide is made of high quality steel material with high hardness, solid and not easy to rust. Professional and practical design, beautiful appearance, convenient to carry. This product is an auxiliary sanding tool that needs to be used with sandpaper sanding strip, etc. It's a practical tool to help you save the energy when sharpener the leather cutter head. The square groove is used for grinding the front of beveling knife,The arc groove is used for grinding the back surface of beveling knife. Specification: Material: Steel Size:50x45x8.5mm / 1.97x1.77x0.33inch Color: Black Package Includes: 1 Piece Edge Skiving Beveling Knife Grinding Note: Please allow slightly difference due to manual measurement. Color may be slightly different since different monitor. Thanks!