Bicycle air horn SC-AH-102, the "Milkman" steel horn with a red rubber bulb. Squeezing the bulb drives air through the long steel trumpet and its wide flared bell to sound a warning. The rubber size is listed as 260x 90mm and the finish as BCP. The trumpet has a bright, mirror-like metal finish, the bulb is a reddish orange, and a small metal clip on the stem is used for mounting.