Bevelled plastic gas dip tube fits older Firestone Pin Lock and other brand kegs. It does not fit any Cornelius brand kegs. This part is 1 1/8" long, and has an outer lower tube diameter of .25". It should be used in conjunction with our D67 Dip Tube Sealing O ring. This has also been known to fit Schaefer ball lock kegs manufactured in the 60's.