Product description Blue size: diameter 3/16"4.8mm Orange size: diameter 5/32"-4.0mm Material: Plastic + Steel Package Contents: 1*Mini Electric Grinding Head File 1.Portable Design: The compact size allows you to carry electric chainsaw sharpener anywhere, plug-in design, so you don't have to worry about the chainsaw sharpening not working, you could carefully polish your chain saw chain, its useful chainsaw parts and accessories. 2.Time-saving & Efficient: You could Use electric chainsaw sharpener to polish the chain without removing the chainsaw chain, keep your chain in top condition and save money by using self sharpening chainsaw tool. 3.High Quality MaterialMade of high quality steel, reliable and long life. Please note that grindstone is of high wear resistance and does not need frequent replacement. Keep the chain and guide rod oiled can reduce friction and help extend the life of the product. 4.Enjoy Your Woodworking Life: This chain saw blade sharpener is lightweight and portable, the chain saw sharpening tool is easy to use outdoors. The new chainsaw teeth sharpener provide a simple and fast saw chain sharpening method. 2-in-1 Design2-in-1 Chain Saw Sharpener.Sharpen Teeth and Depth Gauges in One Step. Easy to Carry Combine tooth and flat file together, and no need for depth gauge and filling guide.