With sandpaper clips, sandpaper can be easily polished on a very flat plane because of the support of hard objects, and the bevel edge can be polished with bevel and wedge sandpaper clips, and the edge lines will be . If it is necessary to polish the sealing edge, just hold sandpaper to level it. The leather edge is easy to grind into a circular arc, which is equivalent to increasing the workload after leveling for many times, and it is difficult to that the radian of the sealing edge is consistent. After polishing and leveling with sandpaper clips, it is a plane. If you grind a long straight line, the sandpaper will be hot and dangerous if it is too fast. If you clamp it with sandpaper, you 't burn your hands. Using sandpaper clamp to polish can improve the utilization rate of sandpaper. The tips of bevel and wedge grinding blocks have a certain angle and radian respectively, which can grind the upper surface of tiny concave corners. Name:polishing and grinding block set Quantity:4pcs/set Colour:Black Material:Plastic Package Contents: 1 * Polishing and grinding block set Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.