Designed with a time-tested cross lock design, the Weaver Grand Slam Steel 1 High Matte Cross Lock Rings allow for a tight, secure fit, which allows you to be more consistently accurate with a mounted scope. These rings include all the features you would expect of Weaver to give you the most accurate shot possible. Grand Slam Steel construction Super-stable mounting Weight: 1/2 lb. Dimensions: 1 x 5 x 4.7 Lifetime manufacturers warranty