2Pcs 8mm 300 mm Hardened Shaft Rods + 4Pcs Bearing Blocks + 4Pcs Fixed Bearings For 3D Printer CNC

2Pcs 8mm 300 mm Hardened Shaft Rods +  4Pcs Bearing Blocks + 4Pcs Fixed Bearings For 3D Printer CNC Description:   Perfect for your DIY CNC routers, mills, lathes No more unwanted errors in your machining work Aluminum support rail with pre-drilled holes for ease of mounting Material: Carbon Steel Size: 300x8mm   Package included:   2 x 300mm Chrome Plated Shafts 4 x LM8UU Linear Bearing Aluminum Blocks 4 x Aluminum Fixed Bearings