ITEM NAME:2Pcs LM8LUU Long Linear Motion Ball Bearing Bush Bushing CNC Parts Fr 8mm Rod 100% Brand New and High Quality Name: Linear Ball Bearing Model: LM8LUU Material: Bearing Steel Bearing Mechanism: Solid Friction High quality, high performance Inside Diameter: 0.3inch /8mm Outside Diameter: 0.59inch/15mm Hight: 1.77inch/45mm Quantity: 2 Pcs/1 Set Note: Please allow 1-3mm error due to manual measurement..Model: LM8LUU. 2 Pcs/1 Set x Linear Ball Bearing. Material: Bearing Steel. Due to the difference between different monitors, the picture may not reflect the actual color of the item.