Pricing mentioned is for EA. Requires a minimum buy of 1 piece. Regulator Inlet Nuts, Oxygen, Plastic, CGA-540; Hazmat=False; Features=Designed to accommodate a Full range of gas service requirements;Easy to install;Machined to CGA specifications;Easy to install;Easy to install;Easy to install; StandardPack=1EA; CountryOfOrigin=CN; Connection Type=Female; Gas Type=Oxygen; Material=Plastic; Style=Hand-Tight; Thread Direction=Right Hand;