Cannonball DurableDescription The Teravail Cannonball Durable Gen 2 Tire is built for gravel riders who want predictable traction, durability, and control across a wide range of surfaces. Designed as an all around gravel tire, it features a tightly spaced center tread for rolling efficiency combined with more aggressive side knobs for confident cornering on loose terrain. The Gen 2 update improves ride quality and durability while maintaining the Cannonballs reputation