HR Open Loop Clock Mainspring - 3/16" x .012" x 31" Long - No. 80-999

HR Clock Mainspring, OPEN LOOP End – 3/16″ Width, .012″ Strength/Thickness, 31″ Length, P/N 80-999, steel, new in bag. See image for further details. I specialize is hard to find watch & clock parts and all parts are unconditionally guaranteed. Images do a pretty good job of representing the item