High Speed Low Noise Miniature Ball Bearing W 638/2-2z for Micromotor Baotou Guanying Trading Co., Ltd. Base Info Description Pre：Mf63zz Mf63 2RS Flanged Miniture Ball Bearing 3X6X2.5mm Next：Bearing Silicon Nitride Si3n4 Zirconia Bead Zro2 Ceramic Balls for Ball Mill Machine
