1、VARIABLE SPEED \u0026 EASY TO OPERATE - The rotary tool kit with 6 variable speeds. It is easy to control the speed dial to adjust the speed from 8,000 to 35,000 RPM for different materials needs. The low speed is best for polishing applications and delicate projects such as fragile model parts; the high speed is best for carving and shaping materials. Metal and projects require high speed drilling. 2、EXCELLENT PERFORMANCE - The high-performance rotary tool has powerful motor(Max output power: 170W) providing strong rotational power with lower noise making your DIY project easily conduct. Applicable to stainless steel, porcelain, stone, , plastic, wood, bracelet, etc. 3、85PCS MULTIPURPOSE ACCESSORIES - This rotary tool set includes up to 85 different collet accessories for polishing, cleaning, carving, sanding, grinding, even grooming pets\u0027 nails and so on. Flexible shaft holds like a pen for your precise projects. Drill bits help for precision work on wood. Diamond wheel is the best tips for , ceramic, floor tile, etc.