The Aileron HBC Flex is a revolutionary release that features new technology that has never, ever been done before! The patent pending Aileron finger beds allow for the best  ergonomical handle that allow the handle width to adjust in precise increments like airplane wing flaps in perfect design for the different sized hands of each archer. The Aileron technology helps adjust the release in your hand  directly toward the target in the first ever 2nd axis  adjustment for a release aid while eliminating even more  unnecessary torque. The patented Comfort Flex finger technology adjusts the release in the 1st axis radially  with a total of 30 degrees (15° forward and 15° back) for the perfect ergonomic fit. An optional 4 finger piece can  be bought separately. The HBC mechanism of the release  provides micro-adjustable “hot” back tension settings in a spring-loaded head and a hook sear that fully drops  out of the way to release the d-loop evenly and eliminate torque. The handle is smooth for the first fingers for easier rotation, and grooved toward the ring finger for the grip needed during back tension activation. The Aileron HBC Flex can be ordered in a variety of colors or the  aileron finger beds can be swapped out in the index fingers, middle fingers, or an index/middle finger  set so you can fully customize your Aileron HBC  Flex to your liking.