1-inch silver scope ring set of LOW height for Weaver rail and Picatinny scope base. Made of solid aluminum alloy with a square shank steel cross bolt to better withstand shock and recoil. Wrap-around design for exceptional clamping and centering. Fits Weaver and Picatinny mounts, rails, and bases as commonly found on rifles, pistols, and some crossbows. Works with scopes, red dot sights, and flashlights with a 1 main tube. Low (16.50mm) center height. Good for mounting scopes with objective OD up to 32mm. Quick and easy to install. Clamps onto a Weaver base/rail and tightens using a thumb screw with a coin slot. Anodized matte silver finish Saddle Height: 3.80mm Mounting Width: 20.40mm (front to back) Hex wrench included Before buying these rings, we suggest you take a measurement of the OUTSIDE diameter of your scope objective end and be sure the OD (outside diameter) is no more than 32mm.