8" x 8" x 3/8" Diamond stones Diamond pads aligned at the precise angles allow for quick sharpening for most types of broadheads. Includes a handy diamond knife and hook sharpener to create the complete sharpener. 8" x 8" x 3/8" Diamond Plate Model Description Price 151SF Super Fine Grit (1200) $181.50 151F Fine Grit (600) $181.50 151M Medium Grit (400) $231.00 151C Coarse Grit (250) $286.00 151XC Extra Coarse (150) $434.50