Zipp: As The Second Wheelset In The Zipp Nsw Series, The Zipp 404 Nsw Carbon Clincher Offers A New Rim Shape With Greater Aerodynamic Efficiency & Reduced Side Force As Well As The New Cognition Hubset For Increased Durability & Less Drag. The 404 Nsw, With A Rim Depth Of 58 Mm, Is Designed For Road Cyclists & Triathletes Looking For Increased Speed & Stability. Rim Depth Is 58 Mm Cognition™ Hubset Axial Clutch™ Technology Impress™ Ablc Sawtooth™ Showstopper™