Maxxis Rouleur F120 DC SW Tire M3D The Rouler features a smooth center line with file style tread on the shoulders, puncture protection and a dual compound tread pattern for improved cornering performance SW - SilkWorm increases puncture and tear resistance with a reinforced breaker beneath the tread surface DC - Dual Compound tread provides a lower rolling resistance center paired with extra grip for the corners Weight Model Number