Aftermarket Sub Adapter for Cable Tool

- Sub Adapter for Cable Tool - Used - 2-3/4" x 3-3/4" PIN to ? box - for cable tool well drill string. - 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