Description Machifit 15pcs 100 1000mm CNC Parts Optical Axis Guide Bearing Housings Aluminum Rail Shaft Support Screws Set Feature 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 Specification Brand MachifitType Sliding RailLength Optional 100 150 200 250 300 350 400 450 500 550 600 650 700 750 800 850 900 950 1000 mmDiameter8mmMaterial 45 SteelAccuracy Class HSlide Fixed Way Lock Type Lock Type Package Included 8x100 150 200 250 300 350 400 450 500 550 600 650 700 750 800 850 900 950 1000mm length is optional 2 XOptical Axis2 XKP08 55x13x29mm Zinc Alloy Pillow Block Bearing4 XSK8 42x32x14mm Aluminum Rail Shaft Support1 XLead Screw Rod with Nut4 XSC8UU 8x34mm Slide Bushing2 X5x8mm D19L25 Flexible Shaft CouplingMore Details