Profile: Encore PDC Bits, LLC supplies standard oilfield size PDC bits (from 4” to 24”) and custom diameters for unusual casing sizes and special projects. Our designs run full spectrum, from gumbo drilling fishtail designs to ultra-tough bits designed for abrasive sandstones. Our product category comprises of F-series (fish tail profile), S-series (standard profile), R-series (pilot reamer), C-series (center stabilized), I-series (impregnated bits) and X-series (experimental bits). F-series (fish tail profile) is utilized in soft to medium soft formations such as gumbos, shale, clays, marls and cement. Our impregnated bits are used for extremely hard and broken formations such as volcanics, chert-beds and deep abrasive sands.