Chisel Bit for Cable Tool Spudder type well drilling truck rig,
7-3/4" wide fits inside 8" diameter well casing,
28" length, 2-3/4" x 4-3/4" API pin thread connection.
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.