Make your own. May not be easy to pack in road gear but two pieces of flat bar, 3/4"×1/4"×24" with 1/4" hole in each end and three each, one quarter inch bolts (one to 1.25 ") and nuts will allow you to change either end or both ends of the CVT all by yourself. That holder tool CANNOT be held in one hand while you wrench off the nut. 20 to 24 inches of holder length will allow you to use the ground while you use both hands and bad words to back the nut off! Har, har!
The picture below gives you an idea of how useful this gizmo can be. The steel bars are actually a little less than 3/4" wide. They are from two screw clamps. Every now and then I have to put 'em back together as clamps!