Talley 30mm Quick Detachable Ring w/ Lever Low Color Case Hardened Color Case. These Riflescope Rings by Talley use a non-traditional QD mechanism that makes removal straightforward and smooth. This characteristic allows the rings to be installed and removed with just one hand. However to prevent easy release these rings must be grabbed by the QD mechanism. Reaching for a thumb lever to release the Rifle Scope is done with care so use a dry fit scope cap or a base with a shim to achieve a proper fit. The beauty of steel is that it has a toughness to it that reduces the possibility of damage. However loose rings are extremely easy to lose which is why Talley offers a limited lifetime warranty. To ensure that you're functioning with one of the best QD rings the shooting industry has to offer trust the Talley QD Standard Ring Low. Specifications for Talley 30mm Quick Detachable Ring w/ Lever Low Color Case Hardened: Manufacturer: Talley Finish: Matte Base/Mount Type: QD Mount Ring Height: 0.3 in Tube Diameter: 30 mm Ring Quantity: Pair Fabric/Material: Chromoly Steel Weight: 4 oz Country of Origin: USA Package Contents: Talley 30mm Quick Detachable Ring w/ Lever Low Color Case Hardened Talley CCH600003: 30mm Quick Detachable Ring w/ Lever Low Color Case Hardened Color Case