Main Features:  The product is made from high quality material, which is not only durable but also stable to use for a long-lasting life.  Built to greatly quality control standards, so it has a stable performance and excellent quality.  High quality, excellent workmanship, stable and wonderful performance.  Makes hand-sharpening easier, high strength and hardness, durable, easy to use.  Spindle lock to ease grinding head replacement, easy and convenient to use.  Power of 55W and high rotating speed of 20000rpm,  for convenient use.  Suitable for wood and stone cutting, bore holes and curving.  Wonderful performance will give you an unbelievable experience.     Specification:  Product name: Chainsaw Sharpener Electric Grinder Chain Saw Grinder File Pro Tools;  Material: ABS plastic+Metal;  Weight: approx.720g;  Length: 22cm;  Wire length: 1.6m;  Chuck size: 3.0;  Grinding head diameter: 3-20mm;  Color: Red;  Voltage: 220V AC;  Power: 180W;  Speed: 5 gears;  Rotating speed: 37000 (rpm);  Applicable objects: metal, stone, plastic, etc.     Package Contents:  1x Chainsaw Sharpener;  2x Chain grinding head;  2x Carbon brush;  2x Groves;  1x Wrench;  1x Multi-function chuck;  1x Copper chuck.