[Package Includes] 1 x 0.24inch (6mm) roller, 1 x 0.79inch (20mm) roller, and 1 x 1.57inch (40mm) roller. Three sizes meet different application needs. Use the larger roller for longer flat sections and the smaller rollers for tight corners such as curves, center consoles, and pillar areas. [Raised Design] The sound deadening roller features a raised surface to enhance adhesion. Its textured profile improves handling and prevents slippage. The roller glides smoothly across surfaces, effectively pressing sound deadening material onto vehicle panels. [Thickened & Solid Metal Roller] Constructed with a high-quality metal wheel, riveted steel roller supports, and built-in steel bearings for smooth and quiet operation. The thickened solid design ensures full and tight contact with surfaces, improving adhesion of sound deadening materials, tire patches, and tube repairs. Compared to plastic, wood, or polyurethane rollers, the metal roller provides superior performance. [Secure Connection & Ergonomic Handle] Features a compact structure with a secure connection. The short, ergonomically designed handle allows for easy handling and access to hard-to-reach areas of the vehicle. Ideal for installing soundproofing and sound deadening materials in automotive applications. [Multipurpose Use] Suitable for all types of soundproofing mats, acoustic insulation, and damping materials. Perfect for applying car insulation throughout the vehicle. Can also be used as a carpet roller, seam roller, wallpaper roller, tape roller, and adhesive roller. Color: Black Material: Plastic + Metal Size: 6/20/40mm Package Contents: 3 x Sound Deadening Rollers Note: The package includes only the items listed above. Light reflection and display differences may cause slight color variations. Measurement error is +/- 1-3cm.