HR Superior Loop End Clock Mainspring - 1/4" x .016 x 54" Long - No. 80-505

HR Superior Clock Mainspring, Loop End – 1/4″ Width, .016 Strength/Thickness, 54″ Length, P/N 80-505, steel, new in box. See images 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