Western Enterprises Regulator Inlet Nipples Western offers nuts and nipples in a variety of materials and styles to fit a full range of gas service requirements. Five different types of nut/nipple combinations are available. . . Pack of 1 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 - Lead