This is the short nubby oval flange plug, and it was made to stay in place, is about 53mm overall, and has a max insertable length of 47mm. The piece begins with a ball tip with a max diameter of 30mm and a length of 25mm. The retention flange transitions from the ball tip by narrowing down to 17mm, and then the flange expands back to 27mm. The flange is oval shaped, from flat side to flat side, it measures 28.5mm, and the rounded end to rounded end is 41mm.
The #18 and #30 are the only silicone that we have available in pure translucent. The #00-50 and #10 base color are a translucent white but can be mixed with all our standard color selections.