Click to expand Tap to zoom Mack Tuff Large Tire Ring - Black 25% OFF25% OFF by Nasstoys Original price $13.04 Current price $10.43 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart The Mack Tuff Large Tire Ring, for stronger and harder erections. Made with 100% Silicone.