This protects the wires from the Z motors on a ratrig v-core as they enter the electrical compartment.  These wires run on the bottom of the 3030 extrusion at the bottom of the machine and can easily snag on something while moving the printer around.  Can be used anywhere else you need to securely run wires across a 3030 aluminum extrusion.

Uses M3 nut and T slot nut.