1.good wear resistance 2.Good elasticity 3.High precision, high concentricity 4.No bubbles 5.Smooth surface DescriptionPU wheelBrandKamidMaterialNature rubber, NBR, PU, ... Feature:1. good wear resistance2. high precision, can be within 2ddm3. good depth of parallelism4. no bubbles, smooth surfaceUsageAll kinds of ... ' needs Soft wear resistant PU wheel with axle shaft, High quality (Many hardness)