Mendo Mulcher Aluminum Billet 2 Piece Grinder (1.75-inch Mini, Aluminum) Crafted in Mendocino County, California USA Lifetime Warranty. Solid. Built Like a Tank. Possibly the Last Grinder You Will Ever Need. Heavy Duty Aircraft Grade Billet Aluminum (6061-T6 Bar Stock) Easy to Clean. Minimal Maintenance. Twice the number of grind teeth over the competitive grinders.