Four strategically placed o-rings silence the sear mechanisms making this the quietest hand-held release Carter has ever made, features an open-hook design for easy silent loading on a D-Loop, hook is designed to open away from the face to minimize string & loop contact, has a very short distance between the string loop & the release allowing the archer to shoot a 1/2 longer draw while still maintaining their normal anchor point, also features the new `Magnetic Adjustment Tension System` (M.A.T.S.), which makes changing your trigger tension faster and simpler than ever. Mfg Item Number: RHWH1022