Profile: Encore PDC Bits, LLC supplies standard oilfield size PDC bits (from 4" to 24″) & 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 sandstone. 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 & broken formations, such as volcanics, chart-beds and deep abrasive sands.