The T.R.U. Ball Max Pro Plus 4 Finger Handheld Thumb Release features a 1/2", 360deg swivel head with easy to open and close jaws. The Max Pro is completely silent and provides a built-in lanyard to keep your release in your hand. The smaller head and jaw design allows for more length and more bow speed. Features1/2", 360deg swivel headEasy to open and close jawsCompletely silentFinger bed grooves for added gripAdjustable sensitivity screw Maximum safety with built-in lanyardSmaller head and jaw designQuiet when loading