N/a manufacturer / supplier in China, offering High-Performance Roller with & Leq; 0.02 mm Runout and Ra 0.006& Ndash; 4 & Micro; M, Durable Precision Roller with Ra 0.006& Ndash; 4 & Micro; M and Low Runout Specs, Ultra Precision Roller with & Leq; 0.02 mm Concentricity and Surface Quality and so on.