Tru Ball Sweet Spot Pro Flex hinge/back tension release aid.  You cannot punch yourself in the mouth with this release aid.  When the button on top is depressed and the hook set the head floats.  So once on the string as you draw it cannot fire.  When on target you press the button and the head locks at the angle you have set by the position of your hand.  You then go through to your shot.  If you want to come down simply press the button again. Only selling it as I've bought an Onnex hinge to go with my Onnex thumb and resistance releases.  It includes a two finger extension worth £35.

This aid is only about six months old and is in as new condition.  The asking price on Merlin is £229.86 plus postage.  Selling it for £145 including postage.  Payment by bank transfer preferred or PayPal