Using diamond shaped teeth for an exceptional grind, this 4 Piece Grinder is a handy gadget that's branded by Green Monkey. This herb grinder is assembled using a screw-on thread mechanism. All the pieces screw into one another with the exception of the top piece, which is connected magnetically. The reason the top is magnetic is so that you can freely twist it, grinding your herbs with the teeth. After the herb is ground up within the top level of the grinder, it drops down to the herb chamber. Inside this chamber, there is a mesh screen that catches larger portions of ground herb while sifting out the finer components. These fine particles are collected in the bottom area, called the pollen chamber. After a sufficient amount of pollen is compiled here, use the pollen scraper to gather all the contents. This pollen scraper facilitates the process of gathering pollen in those hard-to-reach crevices. As for the herb grinder's composition, it is heavier due of its zinc composition. It also has textured grip around the circumference of the bottom and top edges. Featuring the Sharper logo on its top face, this grinder is offered in a rainbow color and is made of aluminum.