2Pcs 8mm x 400mm (0.315 x 15.75 inches) Vigorous Linear Motion Rods, Case Hardened Chrome Shaft Linear Rail Guide Shaft for 3D Printer, DIY, CNC -

2Pcs 8mm x 400mm (0.315 x 15.75 inches) Vigorous Linear Motion Rods, Case Hardened Chrome Shaft Linear Rail Guide Shaft for 3D Printer, DIY, CNC -

What You Get: 2Pcs 8mm x 400mm Linear Motion Rod Pack Great Performance Material: 45# Carbon steel, Hardness about HRC55-62, Surface roughness about Ra0.05-08, Straightness≤0.1/1000mm, Chrome plated thickness about 0.01mm Tolerance: Diameter tolerance about -0.01to-0.03mm, Length tolerance about ± 0.1mm Humannized Design: Our linear motion guides are chamfered about C1.0--45°on both ends in order to ensure safety and easiness in assembling other parts on the rod shaft. Wide Application: Widely applied in CNC, 3D printer, automatic machinery, injection molding machine, engraving machine, etc. especially in bearing purpose.