MATERIAL - The sound deadening roller is made up of Metal Roller, Wood Handle, and Metal Connector.APPLICATION - It makes the sound insulation pad more effectively installed on the surface of the car,it also can make tyre and tube patches adhere fully during repairs.EASY TO CARRY - It is compact and easy to carry,which is can solve your problem well.NOTE:This sound deadening roller allows for even pressure of application, minimizes air bubbles and achieves the best adhesion.Please check the dimensions carefully before buying.Color: Wood color + silverSize: 3mm/6mm/20mm / 40mmMaterial:Roller:metalHandle: woodPackage Contents:1pc roller