nfyniti grinders feature razor sharp diamond cutting blades that provide extreme efficiency. These 4 piece hard top grinders are made of zinc. 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. Infyniti grinders feature razor sharp diamond cutting blades that provide extreme efficiency. These 4 piece hard top grinders are made of zinc. 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: 2.12" 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 Window Jar Body