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