... steel bearing 2:Conform to ISO9001 and CE 3:Long life span and low noise 4:Quality assurance...Type: Straight line Type: LinearBrand ... Name: ASK, EASE, FAG, GMN, HRB, IKO, KOYO...Precision Rating: PoModel Number: SRB20UUPlace of Origin: ChinaBaise: Bearing ... phone:+8618254275687 Address : NO.2,Tariff-freeZone,Qingdao,Shandong,China. Linear bearing