Linear motion slide rail support unit FK series 1.good quality with competitive price 2.rich stock,quick delivery 3.ISO9001 Linear motion slide rail support unit FK seriesSupport unit of ballscrew EF,EK,BK,BF,FK,FF...As a professional ball screw support units manufacturer with many year’s experiences,we could offer many kinds of ball screw support units diameter from 6mm to 50mm.At the same time ...