The Trident HP Hose Adapter with Spool is designed to connect a pony bottle pressure gauge to a standard 7/16"-20 high-pressure scuba hose. It can also be used to attach compatible wireless pressure transmitters to an HP hose, making it a versatile accessory for scuba divers. Constructed from durable chrome-plated brass, the adapter includes a high-pressure spool and O-rings for a secure, leak-resistant connection.