Heavy duty dual dragchain low friction

I designed this dragchain with two cable slots to keep the cables of the endswitches away from the steppermotor cables. It uses 10mm m5 bolts.

Instructions for the dragchain: drill the big holes with a 5mm drill (so the m5 spins freely). Drill the small holes with a 4-4,2mm drill and insert hot m5 bolt to create the thread for the part. If done correctly you'll get an almost friction free dragchain.