Profile Design 30TwentyFour Alloy Road Wheelset. The Profile Design 30TwentyFour alloy wheelset is a super strong, super reliable set of road wheels that are ideal for training or general all around use. They feature 30mm deep aluminum rims that provide an aero advantage while still handling well in crosswinds. Their TwentyFour series aluminum hubs use sealed cartridge bearings to roll super smooth while the 20 front24 rear wheel spoke count is optimized for performance. And if you have a set of Profile Design's TwentyFour Series carbon wheels, these work seamlessly as a set of training wheels since the wheels share identical 24.5mm width rims.