This Offset Mount is designed specifically for 1 inch (25.4mm) flashlights & lasers. Mounts to virtually any Picatinny or Weaver style rail with the easy-to-use thumb nut. Mounts flashlight or laser at a 45 degree offset. Features: 6061 aircraft grade aluminum. Rugged design can withstand heavy use. Easily and securely mounts to Picatinny/Weaver rail. Once installed, it will not budge. Will hold any 1" tube flashlight or laser with at least 1.25" of exposed tube body. Lightweight, low-profile design.