If your bow has AMO XX-inches that will be the string length, couple of vendors on Ebay. I got 2 when I ordered mine and swap them out regular. Bowies may could be more helpful if you take your bow there, with knocks or whatever. I shoot wood arrows with feather fletch, you may want to ask about that. I'm very casual about my shooting and do it so seldom. I find it relaxing and arrow speed is slow so time to target is not what you get with a compound, and its all pull - no let-off. Have Fun Good Luck
Not sure if you're still looking for a string, but whatever your bow length, subtract 4" for the string length or AMO length. So, if your bow is 52", your string length or AMO will be 48"...and the above poster makes a good comment regarding eBay. Really great pricing and normally quick shipping.