The B17 is our flagship model, ideal for long distance sports touring, trekking and mtb use. The Standard models feature black steel rails and steel rivets. The B17 Special features copper plated steel metalwork, and both the B17 Special and the Titanium also feature hand hammered copper rivets. The B17 model has been on the market for over 100 years, and is available for gents and ladies: the B17 (gents) and B17 S (ladies).