BRAND NEW! I've never had them on a boot.
I am regretfully selling them, but unfortuantely my horse doesn't need them so I can't think of an excuse to keep them! :(
Here is what the web site says:
Sprenger Ultra Fit Spur - Smooth Rowel
The Sprenger Ultra Fit is a spur that fits perfectly on your riding boots. This unique fit and design eliminates pressure and movement thus providing correct spur performance and protection of boot leather. Made from stainless steel and guaranteed not to break! This particular one has a 25mm or 35mm shaft and a smooth rowel.
These are pretty hard to find!
Retails $98, I'm selling them for $75 OBO.
Shipping is flat rate, $5.