Rokenbok System Building order Toy Vehicle Lot

Product Name: Rokenbok System Building order Toy Vehicle Lot
Rokenbok System Toy Lot  order Not complete sets  Includes all parts/pieces shown in photos  The controllers, receivers, chips and vehicles are in working condition and come with batteries. Comes with two sets of chips (numbered 1 to 8)  but one set is incomplete (missing #3).  The motorized conveyor is not working. It was working when I initially tested it but stopped when I put fresh batteries in it. I think something in the battery compartment may need fixed.  3 sets of instructions included but they show wear and tear.  Some pieces may show minor flaws from use  Contents weigh approximately 12 lbs.