Linear Motion Bearing LM8LUU 8mm Long

From the shop's description

Specification: Model: LM8LUU Material: Steel Inner Diameter: 8mm Outer Diameter: 15mm Total Length: 45mm Feature: Linear bearing ball cage, hardened coat of both ends ring. Made of bearing steel, safe and reliable. Ball in the cage loop to run a smooth ball guide surface to ensure stability even if high-speed. Note: Please read the instruction to confirm it is the correct size the bearing you are looking for. Package Included: 1x LM8LUU Long Type Linear Bearing