Around 6-7/8" x 36' Steel Chisel Bit for Cable Tool
Used
For cable tool water well drill rig.
2-1/4" x 3-1/4" API pin thread.
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.