CBK 6 in 1 Electric Pen Shape Nail care File Drill Polish Art Manicure Machine Tool Product Feature: Multi-Use: Carving, Engraving, Routing, Grinding, Sharpening, Sanding, Polishing, Drilling and more... It is simple to use and professional It is safe and easily to be used. Suitable for professional nail Art Salon or personal use. Please clean the body with soft cloth, never use cleaning solvent or detergents. 10V Adapter Variable Speed From 3,000-20000RPM. Double Bearings Design Double Insulated. Easy to use in any position. Accepts all rotary tool accessories. Lightweight design for precision Operation Specification: Power: single phase,50-60Hz, Double insulated. RPM: single speed:20000, Variable speed:3000-20000 Collet: Collet Type:2.4 or 3.2mm, Spring chuck type:0.3-3.2mm. Dimensions:160mm*24mm(L*Diameter)