The speed adjustment function conveniently controls the air and changes the rotation speed. Suede Nylon Sticker: Suede Nylon Sticker is not easy to fall off and comes with a variety of grinding discs Industrial grade multifunctional pneumatic grinder for polishing/rusting/waxing/grinding Eccentric shaft design, eccentric arc of 5mm, strong, smooth and even grinding Silent exhaust holes reduce noise, continue to dissipate heat, and continue to work without hot., Manufacturer: PokFhgur