Power: 220-240V at 50/60Hz Power Input: 1600W Zero-load speed: 22,000 rpm Collet Sizes: 1/4", 1/2", 8 mm, 12 mm, and 6 mm Capacity: 0–60 mm with 1 set of extra carbon brushes packaged in a color box, 1 set of guide holders, 1 set of template guides, 1 set of trimmer guides, and 1 set of straight guides.