I believe that theyre mainly sold in 30" lengths, so you may need 2 orders if you want to do both back and belly of limbs. I shouldn't speak for Scott and Mindy though. You should contact them through their website, let them know what you want to do exactly and see what advice they have for you. I recently ordered custom lengths from them for my son's little Pup longbow. Mindy was great to deal with, responded to my questions quickly, shipped immediately, and provided a GREAT product. You won't regret dealing with them. Best of luck!