[Mini Reciprocating Sander] USB quick charging electric sanding pen with 8 pcs nylon sanding heads and self-adhesive sandpaper, sanding head sizes easy to identify. Irregular shapes of flat heads and rounded heads meet your grinding needs for different applications. [Small Sander] Multifunction detail sander offers precision design. Ideal for small projects and intricate work, providing precise control and effortless maneuverability. [Overload Protection] The intelligent overload chip automatically shuts down when pressure is too high, reducing motor wear and extending product lifespan. Three-speed adjustment: 2800, 3100, and 3600 strokes per minute. Fast and smooth reciprocating action. [USB Quick Charging] Charging time is approximately 20 minutes. Indicator displays power status in real time. Battery life is approximately 100 minutes under full charge in no-load condition. Model: ES-A Grinding speed: 2800/3100/3600 strokes per minute Color: Red Material: Plastic Size: 178 x 21 x 18 mm Package Contents: 1 x ES-A Sander main unit 8 x Sanding Heads 1 x Power Cord Note: Light reflection and different displays may cause the color of the item in the picture to appear slightly different from the actual product. Measurement may vary by +/- 1-3 cm.