Feature:1. Kit Contents: Linear rod shaft kit contains 2 linear motion rod shaft, 4 SC8UU sliding bearing block, 4 shaft support, 1 lead screw, 1 nut, 2 vertical bearing, 2 flexible shaft coupling.2. Low Friction Coefficient: Linear rod shaft kit is more and less noisy. Low friction coefficient and high trajectory accuracy.3. 304 Stainless Steel: Linear rod shaft is made of 304 stainless steel material and the sliding bearing block is made of steel material.4. High Tensile Strength: Linear rod shaft kit is with high tensile strength and robust, resistance to corrosion, rust and acid.. Wide Use: Linear motion rod shaft sliding bearing block kit is applicable to industrial automation equipment, stepper motor . Such as 3D printer, engraving machine, slider, etc.Specification:Item Type: Linear Motion Rod Shaft Sliding Bearing Block KitMaterial: High carbon steel, steel, aluminum alloy, brassUse: Applicable to industrial automation equipment, stepper motor . Such as 3D printer, engraving machine, slider, etc.Package List:2 x Linear Motion Rod Shaft(Diameter 8mm-L Length)4 x SC8UU Sliding Bearing Block4 x Shaft Support1 x T8x8(P2) Length L Lead Screw1 x Nut2 x KP08 Vertical Bearing2 x D19L25(-8) Flexible Shaft Coupling