Piranha Teeny Lady Kid's Bike, 16 inch Wheels, 11.25 Frame, Girl's Bike, Purple Frame/Fork: 11.25 inch juvenile alloy frame with steel fork Wheels/Tires: Aluminum rims with 16 x 2.125 inch tires Drivetrain: Single speed, one piece crank Brakes/Cockpit: Rear coaster brake, thread less alloy 4 bolt stem with alloy handlebar Extras: Chain guard, training wheels