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Our SpectraGreen rotary valve cord offers repair technician's a totally new product for restringing french horns and other rotary valve instruments.
Spectra is a synthetic fiber with a much higher resistance to abrasion than nylon and Dacron - you'll experience this when you try to cut a length off of the spool with a
scissors or razor blade - it is tough to cut.
And besides being totally impervious to water and oil, Spectra also has practically no stretch to it - 75% less than nylon and Dacron, providing solid, positive lever action.
Sold in 30 yard (27.43m) length spool.