With the Weaver Grand Slam Rimfire Rings, you get four screws and two straps, all of which ensure additional gripping power. Made out of aluminum, these rings are lightweight. They have thumbscrews that make it easy to detach and reattach as necessary without help from any tools. The construction is solid and offers maximum strength. The rings are designed with the best recoil resistance, making them ideal for holding onto your scope. The rings can accommodate any scope mount needs. You can select from a variety of choices, too, including Grand Slam steel.