Specification Color Black SilverMaterial Plastic Cast ironLength 190mm 7 5Wheel Dia 38mm 1 5Wheel Thickness 7 4mm Usage This roller can be used to remove air from underneath tire patch repairs and to ensure proper adhesion Features ● Used to maximize adhesion of Inner Liner repairs ● Always roll from center out ● Bearing inside for using easier ● Provides a nice even smooth role to the use of the tool Notice 1 Please allow 0 5 1mm error due to manual measurement Pls make sure you do not mind before you bid 2 The color may have different as the difference display pls understand Package Included 2 x Tire Patch Stitcher Roller