Wilson Combat 1911 match grade barrel links are created from top-grade 416 stainless steel, providing long-term durability. Higher or lower links may be used for custom applications to raise or lower the point of lock-up. Gunsmiths can customize your pistol's lockup with a selection of five different link lengths available. FeaturesCrafted from top-grade 416 stainless steelPerfect for replacing factory or GI standard pins in any standard 1911 regardless of manufacturerAn ideal option for competitive shooters and handgun enthusiasts alike Note: Size options are the distance between link hole centers.