This 4 Piece 2.5" (63mm) Grinder features a durable ceramic-coated finish that resists wear while delivering a sleek, premium look. Engineered for smooth, consistent grinding, this heavyweight piece is built for daily use and long-lasting performance. Retail Unit: One (1) Grinder Pieces: 4 (Four) An upper chamber, grinding chamber, pollen screen, and a bottom chamber for collecting the finer particles Size: 2.5" (63mm) It's the perfect size to take with you wherever you go Material: Aluminum. Not only lightweight but also extremely durable Finish: Ceramic Coating Pollen Screen: The integrated pollen screen allows for the finest particles to be collected in the bottom chamber Scraping Tool Included: Comes complete with a scraping tool to make pollen collection a breeze