... . 1- Construction: Taper roller bearings comprise the following types, which we can provide, Single row tapered roller bearings, double row tapered ... roller bearings, four-row tapered roller bearings. 2- Since 1996, we have been the agent to SKF, NSK, KOYO, TIMKEN, FAG ... Appearance Competitive Precision rating ABEC-1, ABEC-2, ABEC-5 We're not selling prices, but services!