Aftermarket Large Diameter Chisel Bit

- Large Diameter Chisel Bit - Used - For 10" bore hole / water well / elevator shaft. - Around 5 ft. length. - Appears to have 3-1/4 x 4-1/2 threaded tool joint. - 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