This is the HOG Edge EdgeFlex Low Pressure LP Regulator Hose For Diving Features: Braided advanced technology hose Flexible, durable, and lightweight LP hose Superior abrasion resistance compared to traditional rubber hoses Designed for superior performance Lightweight for maximum comfort Edge Flex LP Regulator Hose has standard 3/8" male threaded end to install in the First-Stage Regulator LP Port. Both metal fittings are constructed from marine chrome plated brass for long life and durability.