The Shuriken is the most compact model in the Japan line, named after the Japanese concealed throwing weapon; the plate and stem details visually reference the shuriken's shape, and the purge runs vertically through the stem. Assembled stem height is 300 mm, inner diameter is 11 mm, plate diameter is 190 mm, and the minimum base depth required is 155 mm. The model disassembles, with an O-ring hose connector. The stem, mouthpiece, diffuser, and bowl connector are made of AISI 304 stainless steel, while the base and hose connector are made of engineering polymer.