I wanted to use drag chain on my V2 Shapeoko and there are many types of drag chain mounts out there for it based on the open source drag chain designed for 3D printing. However I really didn't want to print individual chain links when there is commercially available drag chain for very low cost. These mounts are designed to use the 10x15mm cable chain from Amico. Right now one meter of the stuff is about $8 USD on Amazon so it is a real bargain and time saver. http://amzn.com/B00880AVL2 The mount for the Y axis drag chain attaches to a mount designed to hold the Arduino and gShield boards. You don't have to mount your boards on the gantry to use these but it is a very nice option.