Product Details: New unopened unused merchandise No installation instructions Increases tire life 25%-50% Reduces vibration Helps prevent tire cupping No pre-balancing required Lower tire operating temps 8%-10% Simply remove the wheel, use the bolt holes as guides and reinstall the wheel. Steer axle balancers mount between the hub and wheel, while balancers for the duals mount between the dual wheels. Suitable model (for reference only): For Light Duty Trucks Bus/Motorhome Trailers/RVs Package details: 2× 300-318A Central wheel balancers 2× 300-318B Central wheel balancers .
