Feature: 1. Simple and elegant design, high‑definition LCD display, you can see speed forward and backward. 2. Rotate lock head, easy to replace the drill bit, easy to deal with various problems. 3. Unique child safety lock design, when lock is opened, forward and reverse rotation cannot be switched, and operation is safe. How to Use: 1. Plug the power cord into power outlet. 2. Insert sharpening pen into socket on the machine. 3. Press "FWD/REV" switch to adjust forward and reverse rotation. 4. Press "hand/foot" button to change hands and feet. 5. If not used within 3 minutes, machine will remain in standby mode. 6. Motor speed can be changed between 0‑35,000 rpm through speed control. Specification: Item Type: Nail Drill Machine Power: 60W Material: ABS Speed: 35000rpm Characteristics: Equipped with foot pedal, hand and foot can be switched for polishing, foot pedal operation can control start and stop of machine at will, safe and reliable. Uses: Household, nail salon, etc. Host Size: Approx. 17 x 9.2 x 9.5cm/6.7 x 3.6 x 3.7in Handle Size: Approx. 14 x 2.5cm/5.5 x 1.0in Package List: 1 x Host 1 x Polishing Pen 4 x Grinding Heads 5 x Sand Rings 1 x Manual 1 x Foot Pedal