1、These sharpening stone are lightweight, portable and resistant to friction. 2、The sharpening stone is 3000# grits that you can use for polishing and smoothing edges. 3、Easy to replace the stone of the sharpening system. Or work alone to easily sharpen the knife, chisel, chisel, and tool. 4、Sharpening stones can also use oil or water. 5、6 different sizes for you to choose, you can select the proper size according to your need. Overview: This sharpening stone is made of high grade material, extremely hard, wearable and can maintain their shape well. With 3000 grits, so you can use for polishing and smoothing edges. 6 different sizes for you to choose, you can select the proper size according to your need. Feature: These sharpening stone are lightweight, portable and resistant to friction. The sharpening stone is 3000# grits that you can use for polishing and smoothing edges. Easy to replace the stone of the sharpening system. Or work alone to easily sharpen the knife, chisel, chisel, and tool. Sharpening stones can also use oil or water. 6 different sizes for you to choose, you can select the proper size according to your need. Speciation: Length 100 mm Color: Red Diameter: 2 mm, 3 mm, 4 mm, 6 mm, 8 mm, 10 mm Grits: 3000 Package included: 1 Set Sharpening Stones