Check the listing for details. 5 1/8” diameter x 25" length Cable Tool Drilling Chisel Bit 2 1/ x 3 1/4 tj. Condition: Used. Listed at 100.00 USD. The product is a 5 1/8” diameter x 25" length Cable Tool Drilling Chisel Bit designed for drilling in the oil and gas industry. This drilling chisel bit is specifically designed for use in cable tool drilling rigs, featuring a 2 1/4" x 3 1/4" tapered design. The high-quality construction and precise dimensions of the tool ensure efficient and effective drilling operations in the energy sector, making it a valuable asset for businesses and industrial drilling applications.