Vigor Loop Clock Mainspring - 5/32" x .010" x 20" Long - CML 40.3

Vigor Clock Mainspring, LOOP End – 5/32″ Width, .010″ Strength/Thickness, 20″ Length, P/N CML 40.3, steel, new in package. See images for precise mainspring specifications. I specialize in hard to find watch & clock parts and all parts are unconditionally guaranteed. Images do a pretty good job of representing the item.