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 0.79 inch(20mm) Roller 1 x 1.57 inch(40mm) Roller Note: Please check the dimensions carefully before buying. The 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: 3 different sizes of sound deadening roller to meet different needs. 2 year warranty! 100% money back or replace anytime in 6 months. Any question, please feel free to contact us.