Features: brand new and high quality There are grooves on one side and 2V grooves on the other side, which greatly prolongs life of the grinding hook. Single groove surfaces, 400 fine meshes; double groove surfaces 180 coarse meshes. Two grinding surfaces with different thicknesses meet the needs of different stage of knives sharpening and hook grinding It is a very useful fishing accessory and an upgraded version of hook grinder. Made of high-quality materials, exquisite workmanship, very good quality and long service life. Specifications: Material:Metal Color: Red/Green/Blue Total length: Approx.100mm/3.93inches Width: Approx. 11mm/0.43inches Thickness: Approx. 2mm/0.078inches Sanding length: Approx. 45mm/1.77inches Package Includes: 1x Fishing Hook Sharpener note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.