GCr15 Linear Rail GCr15 MGN12 L250, L300 or L350 Linear Rail with MGN12H long body Carriage The price is including 1pc 250mm, 300mm or 350mm length MGN12 Linear Rail and 1pc MGN12H Carriage A linear guide that is widely used in small CNC, 3D Printers, etc. There are kinds of color options (Green n R...