Cordless Mini Rotary Tool Set – 64Pcs Accessories 3.7V 5 Speed 3000rpm to 15000rpm Rotary Tool Kit USB Rechargeable with Light Mini Electric Grinder for DIY Work Engraving Grinding Polishing

5 Variable Speed: The rotary tool equipped with 5-speed model, You can adjust the speed from 3000rpm, 6000rpm, 9000rpm, 12000rpm, 15000rpm freely, which suit different work situations,such as polishing, cleaning, engraving and carving projects.
USB Rechargeable: The cordless rotary tool built in 2000mAh lithium battery that contains an ECP protector, so that the Electric Grinder will stop charging after fully charged to protect the batter. (when full charged the indicator turns g