Scuba Diving Tank Refill Adapter Key benefits Efficient air transfer: Designed to move air from larger to smaller scuba tanks with a secure 0.31 inch interface, enabling quick, reliable connections during fills. Durable and reliable: Crafted from 6061 aviation aluminum for long service life, durability, and pressure tolerance in demanding diving environments. Portable and convenient: Compact, lightweight design simplifies transport and storage with your diving gear. Easy pressure monitoring: The easytoread dial provides pressure levels at a glance, aiding safe and informed filling and diving decisions. Practical for multiple setups: Suitable for field fills at dive sites, home or workshop ups, and operations without added complexity. Specifications Function: Transfers air from large to small scuba tanks Interface size: 0.8 cm / 0.31 inch Material: 6061 aviation aluminum Dial: Clear, ataglance pressure readout Use case: Scuba diving tank refill adapter What's in the box 1 x Scuba Diving Tank Refill Adapter Usage scenarios Field site fills: Connect a larger primary tank to a smaller buddy tank to up air between dives, with a secure connection and clear pressure readout. Travel and storage: The compact, lightweight design fits easily with your dive gear for transport and storage on trips. Workshop or use: A dependable refill adapter for routine ups and maintenance fills in a home, dive , or training environment.