This is the Zeagle Transfiller Yoke Transfer air from standard Scuba Valve to cylinder with RaZor Reg/Valve The Zeagle Transfiller can be used to transfer air from a standard Scuba Yoke Valve to any cylinder with a RaZor Reg/Valve installed. The Transfiller has a yoke on one end and a stainless steel quick disconnect on the other end. The QD fitting on this Transfiller also fits most paintball gun storage gas bottles used today. The Transfiller is not recommended for RaZors mounted in tanks larger than 10 cu ft, because the weight of larger cylinders can damage the Transfiller during use.