HR Superior Loop End Clock Mainspring - 9/64" x .009 x 25" Long - No. 80-987

HR Superior Clock Mainspring, Loop End – 9/64″ Width, .009 Strength/Thickness, 25″ Length, P/N 80-987, 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