BCY 452X Bowstring Material Red/Black 1/8 lb. 66197. Offering high performance and reliable use this Bowstring from the specialists at BCY is made using materials that are centered around a carbon core and center strand that are bound together with heat-set string loops. High performance and reliable the BCY 452X High Performance Bowstring Material will not creep and provides a tight performance loop that optimizes draw weight and performance. For an awesome way to be sure you have one of the highest quality bow strings the archery community offers choose the BCY 452X Bowstring Material. Package Contents: BCY 452X Bowstring Material High performance bow string material offers good arrow speed with complete stability. Will not creep. 20-24 strands recommended for compound bows.