CNC SFU1605 Ball Screw SET L300-2000mm & Ballnut Housing & Coupler & BK/BF12 US,Housing & Coupler & BK/BF12 US CNC SFU1605 Ball Screw SET L300-2000mm & Ballnut, 900mm; 1000mm; 1200mm; 1500mm; 2000mm;, Compact design and easy to mount and dismount, 1 x BR 6,35mm x 10mm Shaft Coupler, The material is made by the high quality steel and case hardened,1 x End Machine Ballscrew SFU1605, As one of the online sales mall Fast FREE Shipping Easy to exchange! fast delivery ! safe payment! Ballnut Housing & Coupler & BK/BF12 US CNC SFU1605 Ball Screw SET L300-2000mm &.