Lucky Line Wrist Coil with Whistle, 1 per Card, Color May Vary (42301) Durable plastic whistle is securely attached with 7/8" nickel plated tempered steel split ring. Fits comfortably over wrist for work, exercise, sports and whistle is perfect for additional personal security. You will receive one of these assorted colors: black, blue or red. Superior quality wrist coil always springs back and never loses its shape.