UX Shifters are sold as pairs and are compatible with Shimano 8 Speed Alfine internally geared hubs.
UX1 shifters will work with short pull brakes such as road calipers or cantilevers or even mini-v’s and will work with single chain rings only. If you have long pull brakes or a double or triple chain ring you will want a set of UX2’s.
UX2 shifters will work with any type of cable pull brake thanks to its adjustable brake cable pull mounts. These are set up to work with double or triple chain rings or single by removing the left shifter and its mount.