The FatBoy Tripods KeyMod Arca Rail Mount is a high-quality locally-sourced solution for attaching a rifle or spotting scope cage to your tripod. Designed and manufactured in the USA the KeyMod Arca Rail Mount is made with the finest materials and is designed to be mounted to 1.5/38mm Arca-Swiss tripod clamps. Try it out for yourself and experience the convenience and versatility of the FatBoy KeyMod Arca Rail Mount. - Specifications: - Length 5 - Width 1.5 - Catch Stop 3/32