A specialized industrial tool for tightening and loosening Swagelok Tube Fittings, widely used in Instrumentation, piping, and industrial systems. ✅ Original Swagelok Made in U.S.A ✅ ✅ Size: 7/8 ✅ Other Size: 11/16 ✅ Custom design for tube fittings ✅ Suitable for technicians, Instrumentation, mechanics, and industrial maintenance ✅ Original Swagelok instructions on the handle: TIGHTEN 1 1/4 TURNS PAST FINGER-TIGHT A rare and specialized tool, suitable for those who know its uses and work on Instrumentation and Process Piping equipment. The pictures are of the actual item and show its condition.