A roller is a cylindrical tool used in various applications, primarily for painting and applying coatings. It consists of a handle and a rotating cylinder covered with a fabric or foam material that absorbs paint. Rollers are popular for their efficiency in covering large surfaces quickly and evenly, making them a favorite among both professional painters and DIY enthusiasts. In addition to painting, rollers are also used in other fields, such as construction and fitness. In construction, rollers can help compact soil or asphalt, while in fitness, foam rollers are used for muscle recovery and massage. Their versatility makes them valuable tools in many areas.