used in the bearings ISQ9001-2000; QS9000 long life\low noise High precision, worke in high speed manutacture as required Products Certification: ISO9001-2000, QS9000Model No.: NJ207, NJ2207, NJ206, NJ204, NJ210, NJ2210, NJ211, NJ2511, NJ211-2, NJ2511-2, NJ212, NJ213, NJ213, NJ215, NJ305, NJ306, NJ307, NJ2307, NJ308, NJ2309, NJ310, NJ2310, NJ311, NJ2311, NJ312, NJ2312, NJ314Dimensions: Φ54, Φ46.5 ...