Schramm 5001-4837 Matrix 4.5 RC Sub Adapter

- Schramm 5001-4837 Matrix 4.5" RC Sub Adapter - Dual Wall Mineral Exploration Drilling Reverse Circulation - Crossover Connection for Pipe, Collars, Bits, Hammers, Stabilizers or Other Drilling Rig String Components - Note: Appears to be Unused (51065, Old Stock) - Located in Mifflinburg, PA USA