This standard 1-1/8 inch quick action spigot has 12 straight female threads. Used for Nalgene® bottles carboys lowboys and clearboys; accepts 5/8 inch (16mm) I.D. tubing. Also includes high-density polyethylene tubing adapter which takes 1/4 inch or 5/16 inch (6-8mm) I.D. tubing. Dissassemble before autoclaving. Materials: polypropylene with high-density polyethylene tubing adapter. Size: 1-1/8 inch. 1/Pack; 12 Packs/Case. Nalgene® #: 6422-0010.