Features: Professional and portable designed high quality and higher service. Usages: The polishers produced by our company are stable functioning, high speed ,fast polishing , quipped with head lock . Combination of fast converting polisher and multi-function power box .Its designed for the polishing of nail ,Teeth , moulds ,jades,jewellery and other precise polishing. Different heads are designed to get different polishing effect. Users Instruction : 1. Nail Master Nail Master is an idea filing tool set for nail decoration .it has forward and reverse dual direction rotations for left or right handed nail technicians,from 0-35000rpm adjustable speed,quiet smooth operation handpiece with a flexible extension,which is convenient to use for finishing the nails . 2.Technical specifications: Voltage:100V-240V Power:30W Collect:2.35mm (3/32) Rated Speed: Up to 35Ó00RPM One set including: Power Box, Quick-change Hand piece, bits Operation Steps: 1.Press the switch button for 3 seconds until the indicator light is on and flashes slowly,which means the hine comes to stand by mode. 2. Press the switch button again,the indicator light turns to blue which means the bit starts to spin forward. 3. Spin the speed control knob to adjust the speed. 4. To let the bit spin reverse,press the switch again and the indicator light turns to red. 5. After finishing working,press switch button for 3 seconds until the hine comes to standby mode. 6. Press the switch button again for 3 seconds until the indicator light turns off and then the hine shuts down. Pictures: