This bicycle horn is called "super silver" because it has some seriously super sound despite it's modest size! The horn measures approximately 5.5 inches long and the end of the horn where the sound emits is approximately 1.6 inches wide. When you squeeze the black rubber ball on the back, you'll be surprised how loud this horn can get. The sound this horn creates is a higher-pitch tone, and is sure to announce your presence anyplace you ride on your bike! The horn itself is made from steel with a rubber squeeze ball on the rear-end. The adjustable mount is made from bendable steel and this horn can be adjusted to fit most common size bicycle handlebars.