Nail File Drill Kit Electric Manicure Pedicure Acrylic Portable Salon Machine 1 Pen Shape electric Nail Drill for Nail Art Manicure & Pedicure Nail Polisher & 6 Bits (5 diamond bits, 1 emery rod with 6 sanding bands Plus AC Adapter) Variable speed control: 3,000 RPM up to 20,000 RPM Handpiece can directly connected to electricity, easy to carry around! Light-weight design for precise operation! Quiet and smooth. Suitable for pedicure and manicure The nail file can be used for natural nails as well as artificial nails. For professional studio use or home use. Voltage: 110V - 240V. Size: 6.2" INCHES 16cm (L) x 2.4cm, (Diameter of handpiece) 3/32 Operation Detail: Plug in the electric cord to the main electric outlet. Select the desired speed by turning the variable speed control knob on the handpiece. To secure the bits: push in the desired bit firmly into the hole. To remove the bits: turn off the machine and gently pull the bit out.