Guide to Steel Bikes is super educational and interesting. It's everything you might want to know about the history of steel frames and why they're great. Cool diagrams and explanations of various processes for making steel frames like forging, investment casting, and stamped steel parts. Just tons of clip art depicting different frame types, bottom bracket types, different cranksets and hubs. There's even a short history of the Suntour, a bike you've probably had at one time or maybe you just wondered why they were everywhere. Here's where you'll finally find the answer. Guide to Steel Bikes is cut and paste eye-candy for bike nerds!