Ah, I remember that classic silver age Superman imaginary novel featuring the Superman Die Cut Symbol Cuff Links* when Superman, in the guise of mild mannered Clark Kent, used a pair highly polished stainless steel cufflinks ( just like these ) to reflect sunlight and temporarily blind Lois Lane AND Lana Lang so he could super speed change to Superman and go get a malt with mermaid cutie Lori Lemaris. No one questioned why Clark was wearing cufflinks with the die cut shield symbol of Superman on them ( just like these ) but, it was a simpler time, full of fun and securely linked cuffs.
Each cufflink measures approximately .85 inches wide and .625 inches high.

*Caution: this event didn't have happened in Superman comics, not like it couldn't have, the silver age was pretty wacky after all.