1/2″ SCREW IN ROUND GROMMETS HAVE ARRIVED! The inside of the grommet is a true 1/2″. The total width on the grommet is 1″ with a very slight curve that gives a very high end finish look to it! Be sure to find the finish that best suits you. It is available in Antique Brass, Gunmetal, Nickel, Brushed Gold and Rose Gold.