DCOU New Design Premium Grinder 2.5 Inches 4 Piece Tobacco Grinder with Pollen Catcher Exclusive Bump Grinding Gear Herb Grinder (Black) EXCLUSIVE BUMP GRINDING GEAR -- DCOU grinder use the exclusive bump grinding gears, make the capacity is more large, so that you can grinding more spices at one time , no more duplication of effort. LIGHTWEIGHT -- Our grinders are lightweight since they are made from aircraft grade aluminum solid scratch resistant all metal construction. No plastic or zinc parts are involved. Anodized finish looks amazing and prevents flaking, pealing or smudge marks. SHARP TEETH -- The grinding part which has extremely sharp diamond shaped blades top and bottom which cut through even the dampest of herbs and a unique bowl shaped design. POWERFUL NEODYMIUM MAGNETS -- Heavy grinder with powerful rare earth magnets keep the lid in place, your herbs fresh and the odors in the grinder. Micron mesh to filter out the purest pollen and free scraper included. Our thin poly o-ring guarantees smooth grinding. YOUR SATISFACTION Is 100% GUARANTEED. In The Unlikely Event You Don't Love Your Grinder Let Us Know , And We'll Send you A Refund. We Offer A LIFETIME Warranty On Our Grinders. We Love Our Customers. No Hassles, No Problems! Your satisfaction is our top priority!