Kangaroo's Wooden Train Whistles, Train Engineer Whistles, 6" (18 Pack) 18 Wooden Train Whistles Per Order; Ours Actually Work!! Train Whistles Are Roughly 6" And Make A Whistling Sound Like A Locomotive Train Conductor or Train Engineer Our Train Whistles Are Perfect For Birthday Party Favors, Christmas Stocking Stuffers, Dress Up & Costume Play Or General Gifts If Using Train Whistles as a Party Favor, You Get 18