Aftermarket 10.25 260mm Twisted Cross Chisel Bit

- 10.25" 260mm Twisted Cross Chisel Bit - For drilling difficult rock earth formations with water well cable tool drill rig truck - 71" length 4" x 5" API thread joint. - Used - For drilling difficult rock earth formations with water well cable tool drill rig truck. - 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