The kit includes optical axes and lead screws, housings, linear guide brackets, CNC stepper couplers, and ball bearings, fully equipped to meet your needs. Made of quality materials, high wear resistance, low friction, high rigidity, and long service life. Mainly used for industrial automation equipment, stepper motor rails. Such as 3D printers, engraving machines, XYZ module, slides, elevators, etc., are widely used. You can try. The kit includes optical axes and lead screws, housings, linear guide brackets, CNC stepper couplers, and ball bearings, fully equipped to meet your needs. Made of quality materials, high wear resistance, low friction, high rigidity, and long service life. The optical axis is suitable for various electronic equipment, transmission shafts, and pillars. The bearing housing has a certain load capacity and strong applicability. It can be mounted on ordinary precision racks. Small size, large transmission power, stable performance. Mainly used for industrial automation equipment, stepper motor rails. Such as 3D printers, engraving machines, XYZ module, slides, elevators, etc., are widely used. Specifications: Name: Slide Rail Set Downward Path: Linear Guide Material: 45 Steel Accuracy Class: H Slide Fixed Way: Locking Type, Locking Type Chrome Plated Optical Axis: *8*400mm KP08 Zinc Alloy Pillow Block Bearing: 55*13*29mm SK8 Aluminum Rail Shaft Support: 42*32*14mm T8*8(P2) Stainless Steel Threaded Rod with Nut: 400*8mm SC8UU Slide: 8*34mm D19L25 Flexible Shaft Coupling: 5*8mm Item Size: 410*75*30mm / 16.14*2.95*1.18in Item Weight: 867g / 1.91lb Package Size: 500* 100 * 50mm / 19.69 * 3.94 * 1.97in Package weight: 900g / 1.98lb Package List: 2 * Chrome Plated Optical Axis 2 * KP08 Zinc Alloy Pillow Block Bearing 4 * SK8 Aluminum Rail Shaft Support 1 * T8*8(P2) Stainless Steel Threaded Rod with Nut 4 * SC8UU Slide Rail 2 * D19L25 Flexible Shaft Coupling Notice: 1.Please allow a bit error due to manual measurement. pls make sure you do not mind before you bid. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.