TwotreesMGN12H 450mm Linear Sliding Guideway with 1pcs Linear Bearing Sliding Block for 3D Printer and CNC Machine(H-Type,Black)

Got this to replace the x axis on my 3d printer. There seemed to be a few bearings missing from one side but it worked OK once it was lubricated and is now running well. Good value for money but did have to wait a couple of weeks for delivery.