Our Crossbow sets undergo the same rigorous building process as our custom bowstring sets. All strings and cables are pre-stretched and stretched at high workloads. All end servings are finished off with BCY Halo servings for its unmatched history of combating serving separation. All center servings are built with BCY’s Cross bow serving for a universal nock fit perfect for any crossbow bolt on the market. We us only the best BCY Dynaflight 97 material for our crossbow sets. All sets are built from 28 strands of Dynaflight 97 for an extremely stable crossbow string set that will not stretch.