General description 2pcs BK12 BF12 Ball Screw End Supports for SFU1605 SFU1610 Ball Screw CNC XYZ Parts, made from durable carbon steel with exquisite workmanship. Technical specifications Model: BK12 / BF12 Color: Black Material: Carbon steel Inner diameter: 12mm Outer diameter: 34mm Thickness: BK12 - 25mm, BF12 - 20mm Installation Fixed to the rod threaded on the fixed side. The fixed side is inserted, tightening the lock nut, secured with the cushion block and the six inner angle bolts. The supporting side bearing is fixed on the threaded rod shaft with a retaining ring and is loaded into the bearing block. Usage Provides high rigidity, high precision, and stable rotation performance. Ideal for CNC applications involving SFU1605 and SFU1610 ball screws. Other information Package includes: 1 Pc x BK12 Fixed Block, 1 Pc x BF12 Bearing.