510 Large Volcano Drip Tip or Mouth Piece F4

Super slippery and soft  and comfy on the lips.

Epoxy Resin 

These are clear / transparent with colored swirls.  Pretty sharp looking actually.

FYI - Your Innokin Tanks... with the little ramp to the tip... these look dorky!  It leaves a weird space - no one will notice, but you, but it's dorky... check photo for details