Features: Hobby router for a wide variety of uses. Battery operated, can be used both indoors and outdoors. Set of 5 types of tip parts. Uses: For carving metal, copper, brass, aluminum, glass, wood, ceramics, etc. For model crafts, plastic model name engraving, etc. Specifications: Rotation speed: 16,000 - 2,000 min-1; Continuous usage time: about 60 minutes; Power supply: 4 x AA batteries; Accessories: Tip parts: 2 x spheres, 1 x half-circle, 1 x cylinder, 1 x cone