Schwinn Men's Phocus 1500 700C Flat Bar Road Bicycle, Silver, 18-Inch Schwinn aluminum fitness frame with full aluminum rigid fork for quick agile riding Shimano 24 speed rear derailleur with Shimano EF60 shifters Alloy rims are lightweight and strong, front quick release Linear pull brakes for great breaking power SR Suntour alloy crank for wide gear range