Simple quality Sling Swivel Sets by Bisley to attach your chosen sling to your rifle. This option offers a quick and easy fitment to the barrel once the correct diameter kit has been chosen. The screw swivel end will self tap once a small pilot hole drilled to the desired position on your rifle butt. The top swivel ring will simple and easily clamp onto the rifle barrel and is adjustable allowing you to fit to your own preference. The 1″ wide strap bracket is universally standard and will fit most straps. The kits are available in sizes: 13.5mm, 14.5mm, 16mm, 20mm and wood to wood (two screw on swivels) We also have a good choice of slings available at sensible prices.