Cable Tool Well Fishing Equipment to knock stuck drill string components loose.
For use in holes 5" and larger,
this bumper measures around 8 ft. 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.