1Made of high quality aluminum alloy, this ball screw nut housing is strong and durable 2Housing surface is well finished which ensures a better smoothness 3With 28mm inside diameter, it is specially used for SFU1604 1605 1610 ball screws 4This ball screw nut housing would be a great replacement for CNC part 5Applied to various do linear motion of occasions, such as 3D printing, CNC lathe and so on