Crafted with heavy duty zinc alloy designed with 4 pieces and 3 chambers.;Mesh Screen filters very fine pollen and Pollen scraper is included.;The magnetized lid helps considerably to reduce spilling.;Thin Poly O-Ring for smooth grinding and less friction.;If for any reason the Golden Bell Grinder is not what you were looking for, you are protected by our MONEY-BACK guarantee, no questions asked.