Gear Up's Rack-n-Roll 1 Bike Stand is an elegant bike-parking solution that holds any bike upright and lets you easily move the bike around when it's parked, too. The specially shaped side bars provide stability while avoiding contact with derailleurs, disc brakes and axles. There are four small solid-plastic wheels on the bottom for rolling the rack around. And, because the stand offers adjustable settings from 1 to 5 inches wide, it will accept bikes with even the narrowest or widest tires. You can park bicycles by the front or rear wheel, which lets you line multiple bikes up more closely by putting every other one facing the opposite way (so the handlebars don't bump into each other).