This is an O.E.M. Authorized part or this is an authorized aftermarket product Fits with various Delta models. Oem part RP12517 Horizontal rod for drain pop-up assemblies. 6-1/8-Inch long (standard length) For use with lavatory faucets. Pop-up ball joint rod. Sold individually The Pivot ball diameter is 0.7275 inch. Lift rod is made for use with the metal (RP26533) and 50/50 (RP27575) pop up drain assemblies Horizontal rod for drain pop-up assemblies 6-1/8-Inch long (standard length) For use with lavatory faucets Pop-up ball joint rod Horizontal rod for drain pop-up assemblies 6-1/8-Inch long (standard length) For use with lavatory faucets Pop-up ball joint rod Sold individually