BlackHeart Barnett WhiteTail Hunter Pro Crossbow String - 34.375in - BlackHeart crossbow strings are handcrafted using the right blend of modern materials, machinery and time-honored techniques. Result: crossbow strings featuring BlackHeart's innovative GlideLock servings and exclusive DuraWeave construction that makes for the absolute finest system available today. Each string is meticulously crafted to fit your crossbow. GlideLock serving DuraWeave construction 34.375in inch string For Whitetail Hunter Pro