Made from durable aluminum materials. Anodized matte black. Approx Length: 5.2 inches, Width approx 7/8 inches. This new 2nd Generation scope mount rail features an improved, more robust mounting system with quality screws and tighter tolerances overall. Built to withstand abuse from recoil. Weaver style mount ( 7/8″ wide slotted rail) will fit accept most rifle/pistol scopes, red dot scopes and other aiming devices. This scope mount has a special mount that is made to fit Ruger bases as found on the Ranch Rifles and various other Ruger rifles. Attaches directly to the Ruger factory scope mount grooves that are milled on the top of most of their rifles. Note that some older versions of the above mentioned rifles do not have the Ruger factory scope mount bases milled on the top and thus will not be compatible with this mount. The scope mount comes with all the necessary screws and allen wrench needed to mount this on your rifle. Easy bolt-on no gunsmith installation will take no more than a couple of minutes. This mount does Not allow use of iron sights. Check out my other auctions for this mount in silver color. Brand New with Manufacture Warranty Against Defects