The Weaver Detachable See-Thru Rings enable you to use your scope or iron sights for faster target acquisition. The rings come with a square cross lock bolt, which fits securely with all Weaver bases. There is a steel strap for additional strength. The aluminum saddle reduces the overall weight. The detachable rings embody Weaver style with an ability to handle any scope mounting. The detachable rings are available in a plethora of choices, including Grand Slam steel and aircraft-grade aluminum.