Need custom strings on your bow or crossbow? We make the best. Any colors, pre stretched, installed and tuned for free. Get your Killer Beez custom strings today! Developed by Jim Beasley, Killer Beez strings were designed with precision in mind. One to two day turn around in most cases. Get your bow or crossbow stung by Killer Beez custom strings and terms like “stretch” and “creep” no longer exist. Each string is hand built using a proprietary technique developed at Spot Shooter Archery. If you want the best and want to shoot for the gold, Killer Beez custom strings is the place to start.