ALL-IN-ONE With 36 AccessoriesRotary tool comes with 36 attachments and accessories is perfect for a variety of light-duty handy works. Grinding, polishing, curving, sanding, engraving and more light projects, all your need is this convenient all-in-one tool. Engraving bits x 24, polishing bits x 12.
Variable Speed with APP (OPTIONAL) Users can precisely customize speed by every 1000 RPM and direction by forward/reverse of every single mode easily via ARROWMAX Smartphone app that's available for Android and iOS. Lowest being at 10000 RPM and highest at 20000 RPM.