NO PLASTIC PARTS - Our Grinders Are Made From Aircraft Grade Aluminum On CNC Machines For A Perfect Fit, Sharpest Teeth and Enduring Durability. Our Grinders Are Made From Heavy Duty Aluminum. No Zinc, No Cheap Parts And No GIMMICKS. SHARP ALL METAL TEETH - Anodized Aluminum - Forty Nine ALL METAL NOT PLASTIC Sharp Diamond Shaped Grinding Teeth - Thirty Two Holes. We Saved No Expense To Offer The Sharpest Most Durable All Metal Teeth And Grinder BEST QUALITY AND VALUE - Heavy Duty Grinder With Powerful Neodymium Magnets - Keep The Lid In Place, Your Herbs Fresh And The Odors In The Grinder. The Lid Is Tight And You Can Grab Your Grinder By The Lid And Shake It And The Lid Stays On - No Danger Of Spillage. ONE COLOR = ONE PIECE - Our Grinders All Made From ONE Piece Of Aircraft Grade Aluminum. Each Peice Is CNC'ed From One Piece Of Aluminum. The Lid And Teeth Are One Piece. The Second Part With Teeth And Holes - One Piece. Mixed Colors Mean Mixed Parts - Black Lids And Silver Teeth Are Made From Two Parts And NOT RELIABLE. WE LOVE OUR CUSTOMERS - Check out Our Reviews. We Really Care - 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 Golden Gate Grinders. No Hassles, No Problems - Check Out Our Amazing Reviews.