[High Quality] - 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. * [Use Together withSandpaper] -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. * [Easy to Use] - Just place the sandpaper over the corresponding slot of the repairer and sand it back and forth in one direction according to the . Square groove, the edger is polished on the front. U groove, the edge of the edger is polished. * [Suitable Object] -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. * [Square and Groove] -The square groove is used for grinding the front of bevelling ,The groove is used for grinding the back surface of bevelling .