For tours, vacation, and racing, we travel with S&S-coupled bikes and this tool.
It’s a Hozan, C-205 lockring wrench that tightens and loosens the couplings. Well made, steady in the hand, and when used means we’ve either started or ended a trip.
Our road travel bikes are designed by Mark V and built by Bill Davidson. We’ve ridden them all over the Pacific Rim and the States.