Aftermarket Crossover Sub Adapter Extension for Ca

- Crossover Sub Adapter Extension for Cable Tool - Used - 3 3/4" x 2 3/4" - 7 threads per inch box female to 2 1/4"x 3-1/4" pin male crossover sub adapter drill stem extension - For cable tool well drilling servicing rig. - Presumably American manufactured with carbon and/or alloy steels, but unsure if this is Acme, Spang, Gill Rock Drill, Ideco, Trident, Rampp, O.W.S. Co., Keystone or maybe another historical tooling manufacturer - If you require thread protector(s) on tool joint(s) add another $15 - Located in Mifflinburg, PA USA