Cannonball Durable V1Description The Teravail Cannonball Durable casing is a proven gravel tire built for riders who want reliability, efficiency, and predictable handling across mixed terrain. As the original Cannonball design, this version delivers a fast rolling feel on hardpack and gravel, with a tread pattern that remains dependable when conditions get loose. The center tread uses tightly spaced knobs to keep rolling resistance low, while the side knobs add