4.75″ Kwik-Out Safety Stirrup Irons. These irons are in very good used contain, however the inlayed pads have been removed. Usable as is. Often times, people inlay sand paper to improve grip. Otherwise, the irons themselves are in excellent condition. The company that made these have long since gone out of business, so its getting so hard to find these. Lovely, stirrups that are a bit heavier and built with safety in mind!  Per Kwik-Out:
-Designed to instantly release when extraordinary pressure is applied to the side bar.
-One of the safest stirrups yet developed.
-Includes shock absorbent nylon tread, sure-grip pad and safe spring release.
-The Kwik-out Stirrup spring is manufactured in Japan from the highest grade steel to ensure the perpetual performance of this vital part .
-Once released it is just a simple clip the stirrup back together and you are ready to go again.