The Diamond Devil PDC bit from Palmer Bit Co. is stocked in sizes ranging from 37⁄8-inches to 61⁄4-inches; other sizes are available. Cutters are premium grade for extended bit life and durability, and gauge pads have tungsten carbide inserts to enhance wear resistance. The bit’s cutter layout is force-balanced to drill a precise round hole and reduce bit whirl.

Palmer Bit Co., Card No. 205