Infyniti grinders feature razor sharp diamond cutting blades that provide extreme efficiency. These 4 piece hard top grinders are made of zinc alloy. Infyniti grinders are anodized for a smooth finish and are also equipped with powerful neodymium magnets to help keep them closed. All 4 piece grinders come with a pollen scraper. Grinder Features Size 2.5" Made of Zinc Anodized for a Smooth Finish Razor Sharp Diamond Cutting Blades Powerful Neodymium Magnets for Incredible Closure Smooth Grinding and No Friction Stainless Steel Pollen Screen What's in the Box 1x - 2.5" 4-Piece Zinc Pollinator by Infyniti 1x - Pollen Scraper