Sound Deadening Roller making car insulation work a breeze. And it also allows the tire and tube patch to adhere completely during maintenance. Material: Roller：metal Handle: wood Package: 1 x 0.24 inch(6mm) Roller 1 x 1.57 inch(40mm) Roller Note: Please check the dimensions carefully before buying. Roller handle is made of wood, the rolling wheel is made of metal. It can be used on any sound deadening mat, made the sound insulation pad to be mounted more effectively. Compact and easy to carry. PACKAGE: 2 different sizes - 1 x 0.24 inch(6mm) Roller , 1 x 1.57 inch(40mm) Roller 2 year warrantyy! We are committed to providing a satisfactory response within 24 hours!