Outdoor Connection Talon Double 1" Screw Sling Swivel Set -In addition, the swivels feature a quick-release spring and are silent in the field. Includes 2 swivels, 2 wood screw bases, 2 machine screw bases and 4 black spacers. All steel one-piece constructionQuick-release stainless steel spring on swivelsFits all USA standard swivel basesManufacturer's Forever GuaranteeTwo 1" black steel swivels2 wood screw swivel bases (3/4" and 1/2")2 machine screw swivel bases with knurled nut (3/4" and 1/2")4 black spacers