Rezista Mainspring #115 for Benrus caliber AY and ETA caliber 980 movements - Steel

Rezista Mainspring No. 115 for Benrus caliber AY and ETA caliber 980 movements, steel, new in envelope. See images for mainspring specifications. I specialize in hard to find watch parts so I usually have whatever you might need and all watch parts are unconditionally guaranteed. Images do a pretty good job of representing the item.