Bowtech uses 22 strands of 452X BCY Low stretch material. If you can get the best string made for your bow at a reasonable price then ordering one or more is a no brainer.. get them,install each andserve in a peep and nock/loop/kisser and run a hundred or so shots through them then remove to store. Then when you are milesfrom your local bow shop, you have a set-up ready to shoot string.