Mini Santa Cruz Shredder Red Aluminum 4 Piece Grinder + Custom Pollen Pick Bundle 7-Catch&quot; thread design automatically prevents cross-threading. All Santa Cruz Shredders are covered by a lifetime warranty. Red anodizing offers superior protection from scratches &amp; wear. Dimensions: Diameter - 1 5/8", Height - 1 1/2" Deep Knurled Grip Pattern makes it easier to twist the grinder.