Wideview Scope Mount WSM-HI For the 1-Inch Hi Rings For 38 - 40mm Scope 1-Inch Hi Rings for 38mm - 40mm Scope This scope mount is made of aluminum extrusion anodized bright for lifetime use Mount scopes to any guns bases are made for The screws are heat treated socket cap screws and they have a special oversize head for more holding power in the aluminum 100% Manufactured in the USA