This is an all-aluminum Diamondback Mountain Bike Model 2012 Outlook, 21-speed Shimano shifters, equipped with Avenir U-lock ($25 from Amazon). More information about the bike at http://www.diamondback.com/2012-outlook.

My ex-roommate bought it brand new for $299 from Cardinal Bikes a year ago. He has maintained it in excellent condition. He left Stanford after summer and gave it to me, but I have my own bike so I decided to sell it. It is great for campus or commuting. You can have it with the U-lock for $180.

Please contact Peter by e-mail for inquiries.