1、The kit includes optical axes and lead screws, housings, linear guide brackets, stepper couplers and ball bearings, fully equipped to meet your needs. 2、Made of fine quality materials, strong wear resistance, low friction, high rigidity and long service life. 3、The optical axis is suitable for a variety of electronic equipment, drive shafts, pillars. 4、The bearing housing has a certain load carrying capacity and has strong applicability. 5、It can be mounted on ordinary precision racks. 6、Small size, transmission power of large, with stable performance. 7、Mainly used for industrial automation equipment, stepper motor rails. 8、Such as 3D printers, engraving machine, XYZ module, slide, lifts, etc., widely used. The kit includes optical axes and lead screws, housings, linear guide brackets, stepper couplers and ball bearings, fully equipped to meet your needs. Made of fine quality materials, strong wear resistance, low friction, high rigidity and long service life. Mainly used for industrial automation equipment, stepper motor rails. Such as 3D printers, engraving machine, XYZ module, slide, lifts, etc., widely used. You can have a try. Features: The kit includes optical axes and lead screws, housings, linear guide brackets,stepper couplers and ball bearings, fully equipped to meet your needs. Made of fine quality materials, strong wear resistance, low friction, high rigidity and long service life. The optical axis is suitable for a variety of electronic equipment, drive shafts, pillars. The bearing housing has a certain load carrying capacity and has strong applicability. It can be mounted on ordinary precision racks. Small size, transmission power of large, with stable performance. Mainly used for industrial automation equipment, stepper motor rails. Such as 3D printers, engraving machine, XYZ module, slide, lifts, etc., widely used. Specifications: Name: Sliding Rail Set Glide Path: Linear Guide Material: 45 Steel Accuracy Class: H Slide Fixed Way: Lock Type, Lock Type Chrome-plating Optical Axis: Φ8 * 400mm KP08 Zinc Alloy Pillow Block Bearing: 55 * 13 * 29mm SK8 Aluminum Rail Shaft Support: 42 * 32 * 14mm T8*8(P2)Stainless Steel Lead Screw Rod with Nut: 400 * 8mm SC8UU Slide Bushing: 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-plating Optical Axis 2 * KP08 Zinc Alloy Pillow Block Bearing 4 * SK8 Aluminum Rail Shaft Support 1 * T8*8(P2)Stainless Steel Lead Screw Rod with Nut 4 * SC8UU Slide Bushing 2 * D19L25 Flexible Shaft Coupling Notice: 1.Please allow a bit error due to manual measurement. please 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. 2 * Chrome-plating Optical Axis 2 * KP08 Zinc Alloy Pillow Block Bearing 4 * SK8 Aluminum Rail Shaft Support 1 * T8*8(P2)Stainless Steel Lead Screw Rod with Nut 4 * SC8UU Slide Bushing 2 * D19L25 Flexible Shaft Coupling Notice: 1.Please allow a bit error due to manual measurement. please 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.