Feature: 1. Kit Contents: Linear guide rod shaft kit contains 2 linear motion guide 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 guide rod shaft kit is more durable and less noisy. Low friction coefficient and high trajectory accuracy. 3. 304 Stainless Steel: Linear guide rod shaft is made of 304 stainless steel material and the sliding bearing block is made of steel material. 4. High Tensile Strength: Linear guide rod shaft kit is with high tensile strength and robust, resistance to corrosion, rust and acid. 5. Wide Use: Linear motion rod shaft sliding bearing block kit is applicable to industrial automation equipment, stepper motor guide. Such as 3D printer, engraving machine, slider, etc. Specification: Item Type: Linear Motion Rod Shaft Sliding Bearing Block Kit Material: High carbon steel, steel, aluminum alloy, brass Use: Applicable to industrial automation equipment, stepper motor guide. Such as 3D printer, engraving machine, slider, etc.. Package List: 2 x Linear Motion Guide 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(5-8) Flexible Shaft Coupling