Compatible with: Flower Mill 2.5" Next Gen Premium Grinders, Flower Mill 2.5" Silicone Mill Grip New integrated center rods make plate swapping a breeze—no more lost parts or fumbling. Retail Unit: One (1) 2.5" Milling Plate Mill Plate Size: 2.5" Pieces: One(1) Piece 34% Thicker than Gen 1 Mill Plates NOT COMPATIBLE WITH GEN 1 MILL Grinders OR Next Gen Standard Mill Grinders Consistency Sizes: #2 - Fine