Titanium Nitro Pod Nitroglycerine Waterproof Pill Fob
These Nitro Pods were designed to specifically carry nitroglycerine pills for the heart. They can also be used to carry any other medication or item that needs to be kept dry. These measure 19mm x 8mm overall and have an internal cavity that measures roughly 8mm x 5mm, with the o-ring installed the cavity space is slightly longer. These use a standard #60 o-ring, which is included.