How to Use the USB Nail Drill:
Step 1:Choose the drill bit and Inserted in the front hole of the nail drill machine.
Step 2:Connect the power cord DC plug with a nail drill machine and the other end with the USB adapter or power bank(DC 5V/2A)
Step 3:Control the FORWARD/OFF/REVERSE button in the middle of the electrical cord to turn on/of.
Step 4:Control the SPEED knob in the middle of the electrical cord to adjust the speed. Ready to work
Step 5:The speed of the nail drill machine is controlled within the range suitable for operation. After use, please pull out the grinding bits from the nail drill machine to avoid premature loss of elasticity of the clamping device. Keep the product clean.