Dk Sentry Bmx Bike With Blue Rims (Blue, 20-Inch) DK Race frame design 100% 6061 Aluminum DK Race fork, 100% 4130 Chromoly (1-1/8) DK 7.75 2 pc handlebar Strong Tubular 3pc crank, 175mm Chromoly Alloy 36H rims w/ Alloy hubs and 10mm axles