Features: High speed rotating to enhance the working efficiency, providing a smooth work. Small size and light weight, pen-shaped design is easy to use with one hand. Can be applied in various metal cleaning, chamfering, grinding, engraving, internal processing. Also can be used in cutting, grinding and grinding of plastic, stone, wood and so on. Made of metal material, durable, wear-resistant and never rust. Great tool for the model maker, professional and practical. Widely used in ironwork, carpentry, tire industry surface treatment, shipbuilding industry etc. Specifications: Material: Metal Color: As Picture Shown Air inlet: 1/4 inch Average air consumption: 90 PSI Disk diameter: about 3 mm No-load speed: 65000 rpm Recommended tracheal diameter: about 8 mm Package included: 1 Pc x Micro Grinder 1 Pc x 60 inch Hose 2 Pcs x Chuck Wrenches 1 Pc x Coupler 1 Pc x Manual Note: 1. Due to the light and screen difference, the item's color may be slightly different from the pictures. 2. Please allow 0.5-2 cm differences due to manual measurement