Mantis Taureno Tandem Bicycle Frame/Fork: Steel MTB/Hybrid Frame and Steel Suspension Fork Wheels/Tires: Aluminum rims with 26 x 2.125 inch whitewall tires Drivetrain: 18 speed Shimano with 3 piece crank and comfort Nylon platform pedals Brakes/Cockpit: Front disc and rear V-Brake brake, alloy quill stem, twist shifters and comfort saddle Includes: Aluminum quick release seat post clamp and spring saddle