High Quality Materials: Chainsaw chain jig made by high quality diamond sand, Even and even grit distribution of wheel heads makes polishing work a breeze, Can be used for a long time . 30pcs grinder set: When you sharpen your chainsaw chain with the sharpener, you need less effort to cut wood because your chain makes cleaner cuts with sharper blades. Makes Sharpening Easier: Since you don't have to remove and assemble the new chain, which makes sharpening much easier, you can sharpen a new chainsaw by just a few minutes. Assorted Sizes: Package includes 10pcs 4mm, 10pcs 5.5mm, 10pcs 4.8mm spare stones. Can be used to sharpen saw chain on both gasoline and electric chain saws. Widely Used: The saw chain sharpener is for a variety of applications, can be used for surface decoration lines of metal, stainless steel, iron, copper, wood, plastic and other materials. 30 Chainsaw Chain Sharpening Jig, Diamond Chainsaw Sharpener, Chainsaw File, 3 Different Sizes for Chainsaw Sharpening and Sanding Features: Sharpen your chainsaw chain with the sharpener, it takes less effort to cut wood because your chain will make cleaner cuts with sharper blades. The chainsaw sharpening accessory kit can quickly sand down the chain in just a few seconds, which can improve your work efficiency. It has wide applications, mainly used for polishing or modeling on the surface of plastic, metal and wood, or other situations Specifications: Material: Diamond Item: Chainsaw Sharpening Tools Size: Assorted Size 4mm, 5.5mm, 4.8mm