Allen Magnum Swivel Set for Ruger Rifles with Barrel Bands, Fits 1" Slings Fits Ruger Rifles, such as the 10/22, Mini-Thirty, Mini-14, etc. Easy to install, and makes carrying your rifle easier Designed to work with slings up to 1" wide Can be used with wood or synthetic stocks Includes 2 heavy-duty metal Magnum Swivels, tested to 300 pounds, instructions, and the necessary hardware to install