Description Machifit 15pcs 400mm CNC Parts Optical Axis Guide Bearing Housings Aluminum Rail Shaft Support Screws Set Specification Brand MachifitType Sliding RailGlide Path Linear GuideMaterial 45 SteelAccuracy Class HSlide Fixed Way Lock Type Lock Type Features Non toxic and tasteless environmental protection small size transmission power of large stable performance Mainly used for industrial automation equipment stepper motor rails Such as 3D printers engraving machine XYZ module slide lifts etc widely used Package Included 2 pcs x 8x400mm Steel Optical Axis2 pcs x KP08 55x13x29mm Zinc Alloy Pillow Block Bearing4 pcs x SK8 42x32x14mm Aluminum Rail Shaft Support1 pcs x 400x8mm Stainless Steel Lead Screw Rod with Nut4 pcs x SC8UU 8x34mm Slide Bushing2 pcs x 5x8mm D19L25 Flexible Shaft CouplingMore Details