It's made out of music wire therefore it will maintain its tension and will never get weak!
It's now is US PATENTED.
Medium (most common) will work on 1/2" to 1-1/8" flange bolt hole sizes.
Large will work on 3/4" to 1-3/8" flange bolt hole sizes.
X-large will work on 1-1/4 to 1-7/8" flange bolt hole sizes.
