Check the listing for details. FLEMISH FastFlight RECURVE BOWSTRING Pick Your Length Archery USA MADE Quality. Condition: New. Listed at 22.49 USD. Fastflight Bowstring. MATERIAL : FASTFLIGHT. FASTFLIGHT strings will stretch a VERY SMALL AMOUNT as they are broken in. If you DO NOT know the length of your bow string a good rule of thumb is that a longbow will take a string 3" shorter than they are marked and a recurve bow generally takes a 3"- 4" shorter bow string.