1.good wear resistance 2.Good elasticity 3.High precision, high concentricity 4.No bubbles 5.Smooth surface ... PlasticsBearing ChoicesBall, Needle, Sintered Bronze, PlasticWarranty6 months ~ 12 monthsSpecial Feature:1. good wear resistance2. high precision, can be within 2ddm3. good ... precision can match our customers' needs Soft PU Rubber roller for die-cutting machine, good wear-resistance