Get your Hardened Ground Chrome Bearing Linear Shaft from . 6mm Diameter & 3000mm Length Cut To Size Project Ready with Same day shipping The case hardness could be reach to 58-64 HRC., Durable and corrosion-resistant Humanization Design: Chamfer on both ends, easier to install linear bearings and won't hurt fingers when installing it 2pcs Diameter 6mm x 220mm chrome linear shaft steel straight smooth sturdy rod bar, Length (0., 24 x 8., 66) 6mm Round Shaft Linear Motion Rod Shaft Guide 6mm X 220mm Case Hardened Chrome Plated For 3d Printer Diy Cnc Metric H8 Tolerance 2pcs 3D Printer Linear Guide 2pcs Diameter 6mm chrome linear motion rod shaft steel smooth rod L: 8.66 inch / 220mm We could provide all the customization: any length, threading, and other end processing, you could get some information from pic 2, if you have needs, please message us, thank you Adapting 45 high quality steel, high frequency quenching, surface chromium plating (15um-20um). The case hardness could be reach... Please let us know if you require this. - We can process the end of the rail as you need, some examples you can see the image 4 6mm Chrome Plated Linear Shaft - Cut To Size 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