The Gridded Stemline perc bongs by Kenta Kito Glass are produced in sunny southern California. Each piece is handmade with precision for the best smoke diffusion possible. The gridded Stemline perc to Three Arm Splash Guard will stack bubbles on bubbles! Included is a matching 4-hole screen slide, you are guaranteed to get a big hit! Just open the box and get started, as this piece comes complete and ready to use.