for approximately 5-7/8" to 6" diameter boreholes / water well drillings.
2 1/4" x 3 1/4" API thread.
Around 62" length.
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.