Teravail Cannonball Tire - 650b x 40, Tubeless, Folding, Tan, Durable, Fast CompoundCannonball is a go to gravel race tire for normal conditions. The tread pattern features a directional, tight knit center tread that sheds dirt and debris to decrease rolling resistance, and side knobs for effective cornering traction. Cannonball is built for all around gravel riders and racers. Tubeless ready for flat prevention, lower pressure traction and comfort Durable casing protects against abrasion and sharp trail debris Ideal rim width: 23 mm