1.Ball Screw Support Unit 2.BK,BF,EK,EF,FK,FF series 3.with Angular contact bearing ,good quality . 4.All ... ,EF8; EK10,EF10; EK12,EF12; EK15,EF15; EK20,EF20.FK,FF Ball screw support unit :FK10,FF10; FK12,FF12; FK15,FF15 ... ,FF25; FK30,FF30LWelcome to inquiry !!! Ball screw support unit FK,FF