... drilling. The disc shaped polycrystalline diamond pads, or cutters, are set strategically in rows on the ... bits. The PDC bits are designed for vertical, slant or horizontal drilling and can be used for either non ... core, side track or recovery purposes.PDC cutters ... /8",12 1/4", etc.Body TypeMatrix or SteelBlades2~9 Wings.Cutter Sizes5/16"(8mm),1 ...