Super bright durable fiber is housed in a tough, lightweight metal base for increased life & performance. Features a metal front and rear sight system, unique rear sight adjusts for both windage and elevation, bright and durable Tru-Glo® fiber optics, and In-Line Tri-Dot Shooting System. Mounts easily and securely to vent rib with special lock-down feature. Red front & green rear. Front diameter is .029"; rear diameter is .035". Endorsed by the National Wild Turkey Federation.