... horizontal drilling and can be used for either non core, side track or recovery purposes.PDC cutters we use ... bitMain TypeBit Diameters5 7/8",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),5/8"(16mm),3/4"(19mm),etc.Suitable Formation ...