Golden Deer Top support, the building is used for the bottom and top supports of the scaffolding. Both the top and bottom supports are adjustable for the integrity of the screw. The screw consists of a screw, a nut, a ball, a preloader, a commutator and a dust protection device. Its function is to convert rotary motion into linear motion, which is a further extension and development of Akem screw. An important aspect of this development is the change from sliding to rolling motion of the bearings.