Schwinn Phocus 1600 Men's Road Bike 700c Wheels, 56CM Frame Schwinn aluminum road frame with Carbon fiber road fork Shimano Claris 16 speed derailleur with Micro shift integrated shift/brake lever combo High profile alloy double wall rims with paired spokes are lightweight and strong with front Quick release Promax alloy dual pivot caliper road brakes for great breaking power Alloy crank for wide gear range