Gorgeous Swiss hole design makes this piece unique. Couple that with a honeycomb perc and you have a beautiful mix for smooth tasting sessions. Features:Honeycomb disc diffuser. Coupled with a super unique 7 hole Swiss perc. Joint size:14mm. Made of high quality thick 4mm glass. Includes oil dome and nail. Free shipping to the USA. The design itself is very unique and hard to find. The Swiss percs cool off and smoothen the smoke. Combine that with the honeycomb and we have a beautiful combination of smooth sessions and great taste.