Stainless Steel Balls, Carbon Steel Balls, Ball Joint manufacturer / supplier in China, offering 4X5 4X6 4X8 Needle Rollers for The Bearings, 6.5 * 50mm and Different Sizes Axial Cylindrical Roller Bearing Needle Roller Pin Micro Needle Roller, 3.175X15.75 4X29.8 4X14 Zrb Needle Rollers for The Barings and so on.