Using the dual-head automotive sound deadening roller is straightforward. Begin by cleaning the surface where the sound deadening material will be applied. Once the surface is prepared, place the material and use the roller to press it firmly into place. The dual heads allow for better coverage and ensure that the material adheres properly, eliminating air bubbles and gaps. This tool is for both DIY projects and professional installations. Features -Color:Blue -Material:PC -Size:18.00X5.00X2.70cm/7.07X1.97X1.06in -Versatile dualhead: the dualhead feature caters to different rolling requirements, making it an essential tool for comprehensive sound deadening -Sound insulation: achieve remarkable noise reduction in your vehicle with this roller, enhancing overall driving comfort -Robust construction: crafted from durable materials, this roller withstands extensive use, ensuring it remains a reliable tool over time -Userfriendly design: installation and removal are straightforward, allowing users to apply sound deadening materials with ease and efficiency -Wide application: this roller is not limited to automotive use; it is also ideal for other soundproofing applications, making it a versatile addition to your toolkit Package list: 1 x sound deadening roller