Modelcraft-Linear-Ball-Bearings-Reely-KH-0824-p-Modelcraft-s-Linear-Ball-Bearing-15mm-OD-8mm-Bore-is-a-ball-guidance-system-for-axial-movement-displacement-paths-on-shafts-Bearing-race-&-bearing-are-a-unit-ready-for-installation-the-bearings-have-to-be-pressed-into-a-casing-bore-Two-bearings-are-required-to-hold-the-shaft-precisely-p-p-Reely-KH-0824-Linear-Ball-Bearing-15mm-OD-8mm-Bore