Ballscrew end support unit EK,EFseries 1.Anti-friction,Dustproof,Low backlash 2.Easy installation 3.C5 class 4.good service Precision ... ballscrew End support unit EK,EF seriesKinds of types:AK ... friction,dustproof,Zero Backlash. 5.Models:AK,AF,BK,BF,EK,EF,FK,FF...Specifications:Product pictures:Product Types: CompanyTianJin NaBoRui ...