Wax cast steel, both the sight leaf and base have a as-cast 1/16" diameter hole for pinning. Eliminating the need to drill a long hole. Remove the finial for use on a English sporting rifle. Overall length is 2-5/16". Dovetail base is .380" long, .750" wide, and .050" deep. Height from the bottom of the dovetail to the top of the sight notch is 0.41". Some fitting will be required.