CHECK SPRING Singer 99K 99-13. This is the second time I have ordered a check spring for my wife's 1958 Singer 99 and this to is the incorrect spring. The original spring has a vertical turn inside which is about an 1/8" long that is at 90 degrees to the coil. the first spring had a straight across turn which is incorrect and this check spring has a internal ring which won't work. I'll keep this spring because it cost more to return it than it is worth. I'm not upset but very confused on what I need to order... - CHECK SPRING Singer 99K 99-13. | 
