I got one of these in '97 and have kept it in my tool-box ever since. It's Sram/Shimano compatible w/spoke lever slots for 14 or 15mm. Great little tool I wouldn't go to the end of my driveway without on a tour. Great tool. Completely eleiminates the need for a chainwhip/socket/cresent wrench combo. If you can find one, snap it up.