Fulcrum Racing 5 DB Front Wheel - 700c 12 x 100mm Center-Lock Disc BlackFulcrum Racing 5 DB Front Wheel 700c 12 x 100mm Center Lock Disc Black. Racing 5 DB wheels are the perfect choice for endurance bikes. The lower aerodynamic resistance and decreased stiffness achieved with the lower 24 mm U shaped profile makes them the ideal technical choice for long rideswithout having to worry about climbing rain or wind with a consequent saving in energy and increased comfort. Preinstalled tubeless tape Straight pull hubs