This durable, stainless steel whistle comes with a split ring to attach to keys. Imprints your name and logo on the side of whistle to get more promotion when being used in sports game, events, personal safety and etc. Additional ropes and lanyards available with extra cost. Quantity above 10k will be shipped via SEA. 1 7/8" L x 1/2" W x 3/4" D