... :NSK 3.Retainer: J, K, M, MA, MB. NSK Adapter Sleeve NSK Adapter Sleeve,NSK miniature ball bearings, NSK deep groove ball ... in China.company's main imported brands: Sweden SKF Bearing, Japan NSK Bearings, NTN bearings, KOYO bearings, TIMKEN bearing. Chinese ... bearings, Luoyang LYC bearings, and other major brands. NSK Adapter Sleeve model numbers:Adapter Sleeve (H200): H204, H205, H206, H207, H208, ...