The Uncle Mikes Michaels Swivel Set is compatible with Marlin and Winchester lever-action firearms. This set includes a 1-inch loop and a magnum band, designed to mount on magazine tubes with diameters ranging from .630 to .675 inches, as well as some barrels of Ruger and Browning models and .410 shotguns.Key FeaturesIncluded Components: Set includes swivel components specifically designed for lever-action firearms.Finish: Features a blued steel finish for enhanced durability and corrosion resistance.Application: Suitable for use with Marlin and Winchester centerfire lever actions.Width: The swivel loop has a width of 1 inch.