Igus Drylin R Solid Polymer Linear Slide LM8UU Bearing, RJ4JP-01 - 8mm Shaft (12 pack)

8 mm inner diameter Fits perfectly in 3D printer pillow block Self lubricating, not oil or grease needed Replaces stock LM8UU bearing used in 3D printers 12 pcs per pack and installs easily in x and y axis