Weaver Rem SA 20 MOA 99494 multi-slot base 1-Piece/extended. Hunting scopes mounts. Made of the highest quality materials Aluminum material Picatinny style Fits Savage 110 Series Long Action Round Rear Includes mounting hardware Made in the USA Picatinny bases are designed for specific models of firearms provide an additional 1 inch of forward length for more mounting options Manufactured from 6061 T6 aluminum Protected by a matte, Type III hard coat anodized finish No slip/strip Torx screws