Feature: 1. There are V grooves on one side and 2 V grooves on the other side, which greatly prolongs the life of the grinding hook. 2. Single V groove surface, 400 fine mesh; double V groove surface 180 coarse mesh. 3. Two grinding surfaces with different thicknesses meet the needs of different stages of knife sharpening and hook grinding 4. It is a very useful fishing accessory and an upgraded version of the hook grinder.   Specification: Total length: 4 inch (100mm) * width 11mm * thickness 2mm sanding length: 45mm     Package:1x Fishing Hook Sharpener   Note: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-2cm measuring deviation due to manual measurement.