Hohitto 12mm Linear Shaft, 2pcs Linear Motion Rod Shaft Guide Diameter 12mm Length 1100mm (43.31 inch), Case Hardened Chrome Plated for CNC Machines Equipments and DIY 3D Printer (Pack of 2) : : Industrial & Scientific About this item 1. Material We could provide all the customization: any length, threading, and other end processing, you could get some information from pic 5, if you have needs, please message us We can customise the linear rail, including the length and finishing. The case hardness could be reach to 58-64 HRC., Durable and corrosion-resistant Linear Rail Shaft For CNC Linear Motion Rods,12mm X 1100mm Case Hardened Chrome Plated Linear Motion Rod Shaft Or 3d Printer Diy Cnc Metric H8 Tolerance Smooth Steel Shaft 1100mm 2pcs Diameter 12mm x 500mm chrome linear shaft steel straight smooth sturdy rod bar, Length (0.47 x 19.69) Adapting 45# high quality steel, Good bending resistance, high frequency quenching, surface chromium plating (15um-20um Please let us know if you require this. 2pcs Diameter 12mm x 1100mm chrome linear shaft steel straight smooth sturdy rod bar, Length (0., 47 x 43., 31) CNC Linear Shaft Diameter 12/16/17 mm Length 100-1150 We offer a full range of different diameters of linear rail shaft bars: 5, 6, 8, 10, 12, 13, 14, 16, 20, 25, 30, 35, 40, 50 mm and so on