New concept custom made by @super_rosin_bros on insta 
it keeps all ash and resin from getting in your piece and allows for the smoothest tastiest rips ever u just insert one of those plugs in and pack your bowl on top then enjoy 
Payed 125+ shipping for it brand new and because of the design and how you use it it’s very simple to clean and keep it in pristine condition therefore i cannot go much lower then the posted price because of the condition it’s in:)

Super Rosin Bros Slide 14mm