Hi all, Ive searched the net but cant find this particular air horn the bikes discription noted its a fog horn but Im not sure about that but said was very loud. Can you identify it?

doh Ive just identified it as Pro Pads Mini Beast Air Horn
www.streetchopperweb.com/tech/0710_stcp_chopper_parts/photo_17.html

but I didnt see it on theyre website so guess must be an older design.
www.thepropad.com/mini-beast-horns/

I know what it is      Pro Pads Mini Beast Air Horn    Do women put them on their bike to store their pads

A bit big & fugly

looks like a dyna battery box