1) Copper whistle LS1758 2) Size: 50*19*21mm 3) Material: brass 4) Nickel plated 5) a split ring attached at the end item number: metal sport whistle LS1758 with nickel platedsize: 50*19*21mmmaterial: brasshigh qualityaccessories: cord, lanyard or metal chainsfunction: promotion, military, life-saving, sport games etclogo: engrave or laser high quality copper whistle LS1758