Factory Spec, FS-525RML, O Ring Chain Master Link 525 Pitch RIVET Style RIVET style Factory Spec brand, we cannot verify if this works with other brand chains Works with our o-ring chain that has a tensile strength of 8,200 Lbs. Master links for our Standard &amp; Heavy duty non O-Ring chains are also available Premium quad riveted pins High Grade Alloy Steel Rollers