Get professional results making your own grommets/eyelets * One-piece metal grommets are self-backing; 1/4" inside diameter, 1/2" OD flange, 3/16" barrel length * Steel with silver finish * Use mandrel & anvil or crimping pliers to set - not included, available separately * Includes 100 grommets for canvas, vinyl, leather and other fabrics; additional grommets available