HR Superior Loop End Clock Mainspring - 9/64" x .0075 x 27" Long - No. 80-966

HR Superior Clock Mainspring, Loop End – 9/64″ Width, .0075 Strength/Thickness, 27″ Length, P/N 80-966, steel, new in envelope. See images for precise mainspring specifications and 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