With a rotation speed of up to 13500 rpm, this powerful pneumatic sander is designed to deliver highly efficient performance and serve multiple purposes, such as polishing and waxing, mirror finishing, removing rust and paint, grinding and polishing the welding area. Features: Fine steel motor with a speed of rotation up to 13500 rpm, sturdy and powerful enough to offer smooth and stable grinding. Ergonomic design, compact and lightweight, fits the palm perfectly and provides comfortable grip. Equipped with durable alloy rotor to provide long service and greatly improve grinding efficiency. With self-adhesive disc for quick media changing and not easy to fall off. Designed with 1/4" air inlet and mesh hole exhaust vent. The rotation speed can be adjusted by rotating the air inlet controller. Work with different types of backing pads for various applications, such as wood polishing, rust removal and painting, car waxing, grinding and polishing the welding area. Features: Material: metal Color: red/blackColor sent randomly Disc size: 125 mm (5") / 150 mm (6") (optional) Air consumption: 0.3 L / min Air inlet screw thread: 1/4" Orbit Diameter: 5 mm Working pressure: 0.63Mpa No-load speed: 13500 (rpm) Package weight: 1100g / 38.8 oz Package size: 19.2 * 11.5 * 14.5 cm / 7.55 * 4.52 * 5.7 inch Packing list: 1 * pneumatic sander 1 * wrench