Bearing manufacturer / supplier in China, offering Smr74X2 4X7X2mm Dental Rotor Bearing Torlon Cage High Speed Precision, Dental Bearing Smr74X2 4X7X2mm for Dental Handpiece 80, 000 Rpm, High Speed Dental Bearing Torlon Cage Smr74X2 4X7X2mm 80, 000 Rpm and so on.