Assorted Color 2 Stage 30mm Acrylic Grinder Display Of 24 All of your needs are met by the lightweight, portable Beamer Acrylic Grinder. This two-piece grinder, composed of durable acrylic, is capable of effortlessly crushing even thick, sticky herbs. Transporting is made simple and hassle-free by the inbuilt storage compartment and strong magnets magnet once it is grounded.