ZFE Random Orbital Sander 5" & 6" Pneumatic Palm Sander with Extra 5" Backing Plate, Sponge Polishing Pads, Sandpapers Low Vibration and Heavy Duty for Wood, Composites, Metal High-precision all-steel movement, manufactured by quenching, all-steel rotor, all-steel cylinder, and high-hardness fan blade movement closely match the speed, not easy to damage! The hardened rotor makes it stronger, high-strength and wear-resistant blades, durable, strong grinding force and long service life! The integrated regulator can achieve speed control of 10,000 rpm, high horsepower, high balance, and long-term use without fatigue. 1. Regulating valve: this valve will help to adjust the air power. 2. Air inlet: contact with hose to let air get through and make the machine work. 2. Vacuum tube interface: the part to connect with house or tube. Connect one end of the suction tube to the suction connector, and tie the other end to the bag that collects the dust to use. The 1 meter vacuum tube is very practical and convenient to use. Whether it is used in the workshop or at home, it is your best choice! The set contains flat polishing sponges to meet different polish needs. The sponge material is excellent and durable. The product set includes gloves and towels, which are convenient for use during operation. Gloves anf towels will help you wash and clean the car more easily. The set contains 5 inch and 6 inch perforated sandpaper, which has good heat dissipation when polishing. With hook & loop backing, can be sticked onto backing plate easily. Wide range of use, can be used for deburring of wood, polishing and derusting of metals, polishing of automobiles, etc.