The product is a vintage antique car or bike horn made of rubber and 3 connected horns with a pitted  chrome finish, featuring three horns. 12 1/2" long . 

This collectible item falls under the category of horns and bells, specifically in the automobilia and transportation sections. 

Its unique design and finish make it a desirable piece for collectors of vintage automotive memorabilia.

The rubber ball has a dent in it but it works well ( and loudly ) .