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