Fulcrum Rapid Red 3 DB Rear Wheel - 700 12 x 142mm Centerlock N3W BlackFulcrum Rapid Red 3 DB Rear Wheel 700 12 x 142mm Centerlock N3W Black. Rapid Red 3 wheels are perfectly at home on the road or mixed terrain surfaces. Constructed from a CNC machined aluminum section that significantly reduces weight and increases strength. The 24 mm internal rim width is ideal for current frames designed around larger wheels and tires. 24 mm internal width aluminum rim with 2 Way Fit technology for clincher or tubeless set ups 2: 1