Need to Refill your Extra Air Source or Redundant Air System on the beach or where a Compressor is not handy? This Yoke Filler Adapter is just the ticket. Yoke Filler Adapter allows you to Fill-Off of a Standard Scuba Yoke Valve. Adapter is made of Durable Chrome Plated Brass and Corrosion Resistant Materials. Adapter is covered by a 24 month limited warranty.