Titan Men's Pioneer 12-Speed Commuter Mountain Bike Heavy-Duty Steel Frame Construction Men's Mountain and Commuter Bicycle with a 18" Frame Height. Bright Blue Men's Bike. 26-inch alloy wheels with steel hubs; Comes with 1.75" Tires and Tubes 12-speed Gearing with Click Thumb Shifters; Economical Every Day Use Bike V-Brakes Front and Rear; POWER rear derailleur for smooth gear shifting Adjustable Saddle Height to Fit the Rider Perfectly; Arrives 85% assembled, the remaining assembly is easy and quick.