... :2000&SGS; 4)fast move; 5)C2,C0,C3 JYB: Original JYB 608 2RS Ball Bearings Manufacturer From Cixi, ChinaISO 9001:2000 Quality System ... Series: 626,627,628,629,6200,6201,6202,6203,6204,6205 --- Open, ZZ(Steel Shields), 2RS, UG, 2RZ;3).6300 Series: 6300 ... Package (10pcs/tube); Single Package(1pc/tube);7). Hand Feeling: JYB bearing moves very Fast & Quiet, with very smooth hand feeling; No ...