uxcell LMLUU Series Linear Ball Bearings LM6 8 12 16 20 25 30LUU Extra Long for 3D Printer or CNC LM8LUU (4Qty) a18071300ux0287

uxcell LM8UU Extra Long Linear Ball Bearings, 8mm Bore Dia, 15mm OD, 45mm Length (Pack of 4)

Linear Motion Rods 2PCS 8mmx 330mm (0.315 x 12.99inches) Case Hardened Chrome Plated Linear Motion Rod Shaft Guide for 3D Printer, DIY, CNC - Metric h8 Tolerance

12 Pcs LM8UU Linear Ball Bearings, 8mm Bore Dia, 15mm OD, 24mm Length with Double Side Rubber Seal Great for CNC, 3D Printer