Set of 4 quality alloy replacement wheel hubs to fit 1/10 scale models. Includes 4 x 2mm x 10mm pins. To ensure a fit check your wheel axle has a hole for a 2mm thick pin to go through it and the wheel axle shaft is 4mm in diameter.These wheel hexes feature locking screws secured by an allen key included. Center hole diameter is 5mm Wheel Hex M12 measures 12mm across flats Hub thickness: 4mm