The Black Inc SIXTY wheelset’s construction is optimized for stability and rider comfort, making them ideal whether you’re on paved, or unpaved surfaces, punching up the hills, or soaring on flatter roads. With more riders moving to wider tires, the rim shape of the Black Inc SIXTY wheelset provides a more aerodynamic option for wider tires. The wider rim profile is ideal for 700 x 28c tires, improving on-road traction, handling, and rider comfort.