I have really been trying to use up some cable housing that I had laying around. I decided to do some recent cabling on my TEAM HBD bike. However, what no one saw is that I used brake cable housing on the shifter cables. This is a real big mistake that I don't recommend doing. Now that I have been taught by my friends and co-workers at the store, use the right housings for the right application. Here is a point of reference in case you need the information as well.