Are these pre stretched mate? I'm looking at replacing mine on my drive lt. How often do they need replacing? Had mine since April last year,wax it often and shoots about 30 arrows per week. CheersThese are Americas Best - they have no stretch or rotation. If you look after a string it can last, bow manufactures suggest replacing the string every year because if a string wears you can damage the bow. It is preatty standard in warranty to say strings need to be replaced each year. I have original strings on many of my bows which are old.
