These caps fit any of the size 20 bottles. We suggest using them on the squeezable 2 oz MDPE bottles but not the 2 oz PET bottles. The PET plastic isn't nearly as squeezable as we think it should be for this type of closure; we suggest using a pump instead.
Available in white and black.
Photo Note: Shown (from left to right) are the White Disk Top and Black Disk Top.