HR Superior Hole End Clock Mainspring - 23/64" x .010 x 39½" Long - No. 80-616

HR Superior Clock Mainspring, Hole End – 23/64″ Width, .010 Strength/Thickness, 39½″ Length, P/N 80-616, steel, new in package. See images for further details. I likely have several of these so the one you get may differ slightly from the images. 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