This is a chain of links that carry your cables, tubes, hoses and conduit so you don't have the possibility of the these cables and other things catching on parts of the machine.
The cable carrier runs along the axis and you will need a little more than half of the axis travel length, depending on how your motion and axis is designed. The rule of thumb: measure the axis travel of your machine, divide this by 2 and add 12 inches. The radius of the curl is 2 inches. Purchase brackets separately. You will need two brackets for each axis. If you find a lower price, let us know.