Designed for Polymer Clay Polishing and Grinding: Our polymer clay polishing kit is designed specifically for clay projects,making the of your clay works brighter and the details more refined.The wool polishing head can make the work smoother and more high-gloss,and the diamond grinding needle can reach very narrow spaces,making your work more professional. The titanium-plated twist drill bit is sturdy ,and can easily complete the drilling of clay works of various hardness and thickness.The included sandpaper can be polished with water to make your clay works more exquisite.It is compact and portable,without vibration,and ultra-quiet.It is very for women and users with insufficient arm strength.The polymer clay rotary tool has an automatic speed memory function that can permanently remember your last speed setting to improve work efficiency 35-Speed Adjustment: This polymer clay grinding pen has 35 adjusted speeds,Max speed is 350000rpm. You may choose different gears as actual needs. The low speed gear is suitable for fine grinding and polishing,especially for soft polymer clay or unhardened clay;the medium speed gear is suitable for grinding with medium removal,which can improve efficiency and is suitable for slightly harder clay. The high speed gear is suitable for coarse grinding that requires a lot of removal (use with caution and observe whether the clay is overheated, shiny, melted, or has deep scratches).It is recommended to start with a low speed gear, especially for novices or unfamiliar clay or areas. and Memory Function: Our polymer tool and polishing pen adopts a aluminum alloy shell, the digital display can clearly show the gear, power, forward and reverse, and the ultra- 1100mAh power battery can extend the service life. The charging time is only 40 minutes and it can be used continuously for more than 4 hours. Kit: Our mini grinder contains 78 accessories to meet your diverse needs.The wool polishing heads include 5x spherical,