... : Hardness (shore A): 92-96oCSize Type Model NoInchLength mmExternal DiameterThickness of Rubber Wheel TypeLGL 100B 4" 100 222 19.5LGL 152 ... .Try to avoid to use the single roller, the recommended way is higher hardness for fast roller, lower hardness for slow ... during the working, which is good for recoving the function of rubber, adjusting the speed difference upon on different diameters, and ...