High precision, accurate and excellent thickness tolerance of inner and outer diameters, carefully processed Durable and assured, high efficiency, and more obvious energy-saving effect Smoother cushioning, noise reduction, and silence Model: 3M BF type Sizes:3M45Tooth-BF-11W-5 , 3M45Tooth-BF-11W-6 , 3M45D-BF-11W-8 , 3M45T-BF-11W-10 , 3M45D-BF-11W-12 , 3M45D-BF-11W-14 , 3M45D-BF-11W-15 , 3M45D-BF-11W-8-3 , 3M45D-BF11W-10-3 , 3M45D-BF-11W-10-4 , 3M45Tooth-BF-11W-12-4 , 3M45D-BF-11W-14-5 , 3M45D-BF
