The MONARCH grinder was designed to accommodate the customers of the 420 site that emailed us with their recommendations for a larger grinder and for our Arthritic customers that needed a grinder that was easier to hold because of their disability. It is molded from a USA made Medical grade Polycarbonate with very high tensile strength, Total impact resistance, water clear clarity and UV resistant. The MONARCH also has a total of 133 TROCAR Teeth which gives you a very large grinding surface area and two exceptionally large storage compartments. Storage caps are made from medical grade LDPE and come in Tan and Clear.