... skate bearing As a professional skateboard bearings manufacturer, we have two major advantages compared to other industrial counterparts. First, our ... excellent quality.3,Shield / Seals There are 3 types of Seals for the skateboard longboard bearing, Metal Shield, Rubber ... according to the customer's request.4,RetainerWe have two kinds of retainers, the stainless-steel retainer and the nylon retainer ...