1、Using the pure copper motor, suitable for the chains grinding, and has high efficiency. 2、With transparent protective cover, can resist the grinding sparks and iron filings, prevent harm to human body, and will not prevent the observation of the cutter e-dge grinding conditions. 3、High rebound spring can ensure that the grinding he-ad can spring back in time after grinding to avert excessive grinding from damaging the chains. 4、With a chains lock switch, to ensure that the chains will not accidentally slip and damage the chains and cause harm to people during grinding. 5、Easy to use: It is easy for you to use this chains grander, which can give you a better using experience. This powerful electric grinder is utility for you to grinding your chains of the electric chainsaw and other tools. It is portable in size and with high efficiency, which can give you a better using experience. Come on and try it, it will not let you down. Features: Using the pure copper motor, suitable for the chains grinding, and has high efficiency. With transparent protective cover, can resist the grinding sparks and iron filings, avert harm to human body, and will not avert the observation of the cutter e-dge grinding conditions. High rebound spring can ensure that the grinding he-ad can spring back in time after grinding to avert excessive grinding from damaging the chains. With a chains lock switch, to ensure that the chains will not accidentally slip and damage the chains and cause harm to people during grinding. Easy to use: It is easy for you to use this chains grander, which can give you a better using experience. Specifications: Material: plastics+metal Plug: E-U plug, USA plug (optional) Power: 85W No-load speed: 4800rpm Grinding disc size: 3.2/4.5 Grinding Angle: 0~35° Package size: 275 * 183 * 183mm / 10.8 * 7.2 * 7.2in Package weight: 2400g / 5.3lb Packing list: 1 * Chains Grinder (Optional） 1 * Chains Grinder (Optional）