... of ball screw supportBrand nameHSK, SYK ,Well MotionModleBK-BF,FK-FF,EK-EFDiamaterDiamater:16mm-80mmAccurancyGrade C3,C5,C7MaterialMedium-carbon steelPerformanceLong life ... BF15BK-BF20BK-BF25BK-BF30BK-BF35BK-BF40 Ball screw support FK-FF seriesFK-FF10FK-FF12FK-FF15FK-FF20FK-FF25FK-FF30 Ball screw ... screw support EF series Ball screw support BK-BF,FK-FF,EK-EF Series Thank you for your visiting ! China ...