[Mini Reciprocating Sander] USB quick charging electric sanding pen with 8 pcs nylon sanding heads and self-adhesive sandpaper. Sanding head sizes are easy to identify. Features irregular shapes with flat and rounded heads to meet grinding needs for various applications. [Small Sander] Multifunction detail sander with precision design. Ideal for small projects and intricate work, providing precise control and effortless maneuverability. [Overload Protection] Built-in intelligent overload protection chip automatically shuts down the device under excessive pressure, 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] Charges in approximately 20 minutes. Indicator displays real-time power status. Battery life lasts up to 100 minutes under full charge in no-load condition. Model: ES-A Grinding speed: 2800/3100/3600 strokes/min 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 differences in display screens may cause slight variations between the color shown in the image and the actual product. Measurement may vary by +/- 1-3 cm.