The Santa Cruz Shredder Medium 4-Piece Grinder is made in the USA from medical-grade anodized aluminum. Features a unique tooth design that fluffs rather than chops, preserving trichomes. 4-piece design includes: lid, grinder, screen chamber, and kief catcher. 2.2 inch (55mm) diameter with rare-earth magnets. Available in Silver, Black, Blue, Green, and Purple. Lifetime warranty.