Aftermarket 10-3/8 Sub Adapter

- 10-3/8" Sub Adapter - Used - 7-5/8" REG. API Pin X 6-5/8" REG. API Box - 10-3/8" Shoulder to Shoulder Length - No Wrench Flats - For Large Diameter Rotary Well Drill Rig Tooling - Located in Mifflinburg, PA USA