Originally I had my extruder cable bundle tied to the frame using a large wire tie. This clamp is neater and holds the cable in place better. This clamp can be used for any cable needing to be attached to an aluminum extrusion. The cradle is 12 mm across and the mounting holes are 5 mm. Its hard to see in the photos but there is a path under the cradle for the wire tie to pass through. The path allows for up to a 6 mm wide x 2.5 mm thick wire tie.