... or horizontal drilling and can be used for either non core, side track or recovery purposes.PDC cutters we use on ... ",6",6 1/2",8 1/2",9 1/2",9 5/8",9 7/8",12 1/4", etc.Body TypeMatrix or SteelBlades2 ... ~9 Wings.Cutter Sizes5/16"(8mm),1/2"(13mm ...