Regulator Inlet Nipples Air 1/4 in (NPT) 3 Brass CGA-347 Western Enterprises Regulator Inlet Nipples WARNING: This product can expose you to Lead a chemical known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov Gas Type: Air CGA No.: CGA-347 Length [Nom]: 3 in Material: Brass Wt.: 0.27 lb Thread Size [Nom]: 1/4 in (NPT)