The Carter Evolution "20" 3 Finger Handheld Bow Release is the new and improved resistance activated release from Carter Enterprises. This 3 finger release uses one spring and has an adjustable hold weight of 8-40 lbs. To close the jaw, push down on the hasp until it snaps into the closed position and the release is reset. Weighs 3.2 oz. FeaturesWeight range of 8 lbs - 40 lbsPrecise micro-adjustmentsRelease firees when you increase resistanceLightweight at 3.2 oz.