MASTERDAM Premium Herb Grinder | 1.6 inch Compact Ultra-Portable 4-Piece Grinder with Pollen Catcher | Premium Quality Aerospace Grade Aluminum | Includes Scraper | Black PERFECT GRIND EVERY TIME! - Filled with razor sharp "Lion's Tooth" curved diamond teeth to cut and fluff your herb, our grinders ensure the optimal coverage and surface area. Precisely sized and placed holes in the second chamber ensure that only herb ground to the proper size falls through to the holding chamber below and essential to getting the most out of your rolling experience. SUPERIOR QUALITY & DURABILTY - AEROSPACE GRADE ALUMINUM - Precision milled 4-part, 3 chamber grinder made from anodized Aerospace Grade Aluminum with a super slim, non-stick nylon O-ring for silky smooth grinding; Our 100% CNC machined pieces fit perfectly together and nylon ring prevents metal-to-metal contact when grinding, preventing herb residue build up and sticking unlike inferior zinc-alloy versions. VERSATILE STORAGE AND PORTABILITY - The magnetic lid is held tightly closed for storage by two strong rare-earth neodymium magnets, the strongest available, so your Herb can roll with you! Discreet Packaging - our grinders ship a plain cardboard outer box with no reference to the contents. Your herb grinder arrives undercover! POLLEN CATCHER AND MINI-SCRAPER - A micron screen catches the fine grinds in the third chamber and the mini-scraper tool is included for cleaning and to ensure nothing is left behind. MASTERDAM 100% SATISFACTION GUARANTEE! - We stand behind every product we sell. If you aren't completely satisfied, please let us know and give us a chance to address your concerns. We hope to earn your business for a lifetime and won't rest until you're 100% satisfied with your Masterdam Purchase. Buy with confidence!