A kid's bike isn't complete without an old-fashioned bell to ring when passing friends and neighbors. Horn: 2.5" diameter, 8" long Airplane: 11.25" long x 5.25" wide x 0.75" high Bell: 2" wide x 3.5" deep x 3" high Horn made of metal and rubber; airplane is made of plastic; bell is crafted of metal. Horn comes in blue, red or black; the color is selected for you. Airplane: ages 6 and up. Bell: ages 3 and up. Horn: all ages.