Feature:It's also usable for Ballnut mounting block DSG12H.1204 Ballscrew w/ Ballnut & BF/BK10 End support kit.Specifications:Total length: 400mm /15.75"Material: Stainless steelColor: silver and blackPackage included:1 x SFU1204-L400mm Ball Screw1 x BK101 x BF10 ball screw support3 x Fittings