[Premium Material]: This bow string serving thread is made of high quality Nylon material, good wear resistance, it offers long wear and is easy to serve [Work Perfectly]: The archery serving thread adopts soft twist multi-filament nylon end serving, which is excellent for tying peep sites [Good Breaking Strength]: The nylon string thread has a breaking strength of 34 pounds and works well when installing the peep point [Well Performance]: This bow string serving thread performs well for installing cat whiskers to the bowstring, it is stiff and durable enough to withstand the pushing and pulling [100% Satisfaction]: If you have any question about this item, please feel free to contact us, we will help you within 24 hours