8 multi-functional sand grinding heads: fine grinder tool, equipped with 8 grinding heads: arc, right angle, spherical, sled, square, rectangular, slender, triangular triangle, to meet different needs and effectively remove inventory. Complete accessories: Pen sander with storage box, storage box and self-adhesive sander, suitable for flat sander #180/280/400/600/800/1000/1200 per netGrid pre-cut, self-adhesive grinder, suitable for round sand grinding head #180/280/400/600/800/1000/1000/1200 pre-cut for each mesh. Adjustable speed of 3 gears: Mini sanding pen with one-click operation, 3 gears can adjustable speed: 2800 rpm/min/3100 rpm/3600 rpm/min.There will be colorful lighting effects after activation, and you can DIY reset the lighting effects of each speed. Overload protection - Smart IC chips to prevent your tools from overloading.When excessive pressure is detected, it will be automatically turned off to save the motor and extend the service life. Long-lasting use - It takes about 20 minutes of charging time, displays the battery level in real time, and can last 100 minutes after full charge. Colour:As Shown Material:Metal Package Contents: 1 x sanding pen 8 x sanding heads 12 x sandpaper 1 x charging cable 1 x storage box 1 x finger cap Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.