Use the Sun Optics Loop Swivel Set to attach your sling or strap to the wood stock on your rifle. Each loop is 1.25" (3.2 cm) wide and can be quickly detached from the mounting stud without tools if you want to remove your sling and swap it for another or you need to strip, clean, or service your firearm. This version comes with 1/2" front and 3/4" rear wood screws that are topped with a mounting stud for the swivel loop to attach to. The swivel and screws are made in the USA of strong and durable steel treated with a black satin finish.