The Hawk Pro Swivel is a single sear release featuring a 440C stainless steel open hook. The Hawk Pro Swivel comes with a large diameter knurl trigger and adjustable travel. This release is compatible with any of the index style trigger options. Equipped with an auto return hook and trigger, there will be no wasted time engaging your d loop. The Hawk Pro Swivel also comes with a brand new padded wrist strap that is comfortable right out of the package. B3 Archery's patented swivel connector fits to most hand sizes with adjustment of one screw on the stem. The Hawk Pro is theur newest and best open hook design.