Santa Cruz 4 Piece Aluminum Herb Grinder Small 53mm (Aluminum and Colors) (Purple) Small Size Measures About 2" or 53mm Unique 7-Catch Thread Design Prevents Cross Threading Scratch Resistant Hard-Anodized Aluminum Build Neodymium Rare Earth Magnets Create An Airtight Seal Patented Tooth Design "Fluffs to Perfection"