The item you are looking at is a new 2 pack bite valve kit for Cyclone hydration bladders made by . The bite valves have a threaded screw attachment and Molded TPE (Thermo Plastic Elastomer) soft bite. There are 2 replacemnt valves in this box.
Compatible with Cyclone Bladders by only
Threaded screw-on attachment
Molded TPE soft bite
Replaces worn and damaged bite valves
2-Pack