BIG ugly, maybe useful EV Horns eBay

[Audio_by_Goodwill]

I think those are HR-60's.

Looking at the EV spec sheets and the sellers measurements, that's correct....... which also means my HR90* is actually a 60. The 60 and 90 are actually fairly close in size, but the 90 looks more like my 120 in design, according to the drawings. I feel a bit embarrassed since now that I look at the horn and spec sheets, and see that the 60 and 90 degree angles are pretty obvious.

Can someone tell me why all the drivers seem to be screw on, and the horns are bolt on? I was looking at EV drivers on Ebay other other day and they all seem to be screw on. I was hoping to try out my HR horns after meeting Don Keele.

*Okay at one point I knew I had a 60 because I found where I was trying to sell it, and called it by it's correct model name.