... 1.High Performance,Long life 2,Competitive price 3,Quick delivery,good service 4,skate bearing As a professional skateboard bearings manufacturer, ... 6900zz(10x22x6mm),688zz(8x16x5mm).2,ToleranceLevels of our skate bearings include ABEC-1, ABEC-3, ABEC-5, ABEC-7 and ABEC- ... , with relatively low price and excellent quality.3,Shield / Seals There are 3 types of Seals for the skateboard longboard bearing ...