Aftermarket 15-1/2” D X 48 L Steel Chisel Bit for

- 15-1/2” Diameter X 48" Length Steel Chisel Bit for Cable Tool - Used - 48" length, - 3" X 4" API Pin Chisel Digging Weight for Water oil gas foundation caisson drill rig. - Marked 18" Diameter but measures nearer to 15-1/2" width. - 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