These Carbide Burrs for Hand Crank Only with Chainsaw Chain Sharpening Jig. Emery has the advantages of high hardness, wear resistance, strong toughness, corrosion resistance, etc. It has good grinding effect, fine and uniform, fine carving, hard and not easy to wear, reusable and durable. High- cutting edge with suitable negative forefoot design, taking into account the strength and sharpness of the cutting edge. At the time, the core diameter is used to enhance the rigidity of the tool and make the cutting and chip removal stable. Available in 3 different sizes for Chainsaws (5/32inch/4.0mm), Small Chainsaws (3/16inch/4.8mm) and Chainsaws (7/32inch/5.5mm), additionally includes 12pcs nuts, which can meet your daily needs. It can be used on many fields, such as metal processing, machining and engineering using. chip flute design for smoother chip removal, making the workpiece smoother and brighter. Colour:silver Material:metal Package Contents: 1 set x Chainsaw Sharpening Stone Only the above package content, other products are not included. Note: Light reflection and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.