The 404 clincher 700c rear wheel from zipp is a classic all rounder with strength and reliability that should make this wheel your choice wheel it has a depth and shape that has been proven in all conditions its the all around performer and the standard by which all other wheels are measured the 58mm rim depth is a classic all around performer that has carried athletes to victory in every kind of event and situation every triathlon distance breakaways field sprints and hilly finishes