Matador BetaLock REI Co op Matador BetaLock REVIEW: Matador BetaLock Every Photographer needs one! Matador BetaLock REI Co op. The BetaLock works as a carabiner, a lock, or both keeping your essentials secure with an aircraft grade aluminum build and a key operated deadbolt design. Spring gate for quick clipping Locking + non locking modes Deadbolt lock deters grab and go theft Carabiner with quick clip spring gate Locking and non locking modes High strength aircraft grade aluminum Deadbolt style lock Two keys included *Do not use for climbing or suspending heavy or dangerous loads. The BetaLock and Accessory Cable are not intended for use as a load bearing device.