The OnneX Thumb Release by Stan Outdoors offers excellent ergonomics and high performance. The OnneX Thumb Release shares the same profile as the other premium releases in the Onnex series, allowing for a seamless transition between them. This is evident in the Whale Tail finger piece, which comes standard on all OnneX releases and serves as a place to rest your pinky to provide the feel of a 4-finger handle with a 3-finger body. Alternatively, the Whale Tail can be removed for a 2-finger release, or can be replaced with the included finger piece for use as a true 4-finger handle. Both finger pieces feature adjustable pivot points, allowing the archer to customize the fit and feel of the OnneX. The OnneX Thumb Release is outfitted with a wide assortment exclusive features. An open hook design ensures consistent and accurate lateral nock travel, and a loop retainer provides connection to your bow with the single open hook while also keeping your release connected. The OnneX Thumb Release also ships with two interchangeable thumb barrels – these can be adjusted for height and can pivot, providing the user with virtually unlimited customization options and the perfect fit. The trigger is remarkably crisp, and can be adjusted for tension. In addition, the OnneX Thumb Release features the unique Trainer Lock, allowing you to practice your draw and shot sequence without the risk of dry-firing your bow. Features of the OnneX Thumb Release: Same profile as the OnneX Hinge and Resistance Release for seamless transition between them Whale Tail and Finger Pieces: can be removed/replaced, allowing the release to be set to a 2-finger, 3-finger, or 4-finger configuration Interchangeable, adjustable thumb barrels (ships with 2) Adjustable trigger tension Trainer Lock: Allows you to practice your draw and shot sequence without the risk of dry-firing your bow Stan Outdoors OnneX Thumb Echo Grey XXL Release 8409 in Gray