3,000 and 3,400 strokes per mie for precise control over your sanding task. The inteable sanding heads, including specifications, enable you to tackle a variety of materials and parts with ease, ensuring a perfect sanding effect every time. [Efficient and Time-Saving]: Its high-frequency reciprocating motion ensures quick and smooth sanding, significly increasing your productivity. Whether you're working on flat surfs, tight corners, or intricate curves, this delivers s quickly and efficiently, making your work easier and quicker. [Quick Release System & Ergonomic Design]: With a quick-release mechanism, cing or securing the sanding bit is swift, saving you time and effort. The sander's curved body conforms to your hand, offering erior comfort and control during extended use. Its weight design and wireless operation provide unparalleled maneerability. [Battery-Powered Convenience]: The removable battery compartment accepts a single AA battery, providing high flexibility to work anywhere without the need for cords or outlets. This cordless design ensures unobstructed movement and maximum portability for on-the-go proje. [Solid ion & Wide Application]: ed with robust Plastic material, the sander is built to withstand the demands of regular use. Suitable for sanding tasks, from smoothing out rough edges to sanding detailed models, it is a versatile for model makers, hobbyists, and DIY enthasts alike. Specifications: Name: Reciprocating Sander Material: Metal + Plastic Color: As shown Battery: 1 x AA battery (not included) Item size: 145 x 30 x 30mm / 5.71 x 1.18 x 1.18in Package Contents: 1 x Reciprocating Sander 8 x Sanding Bits 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. Have a great time shopping!