Grinder for flower. 2.2" diameter. 4 piece/ 3 stages. Crafted from aluminum. Includes pollen scraper and travel bag, Made from Aircraft Grade Aluminum Rod using the newest in CNC machining technology. Anodized for smooth finish; this means no wear or smudge marks. Razor sharp Diamond-shaped Cutting Blades for extreme efficiency. Powerful Neodymium Magnets for incredible closure. Thin polly ring around top grinding section, for smooth grinding and no friction. Comes with protective pouch!