Cool vintage dice shift knob, not a new re-pop, those look all wrong. This is perfectly square, doesn't have those weird rounded corners. Measures 1-15/16" (One and fifteen sixteenths of an inch) square, the hole is 1/2" diameter. This is vintage so it's not perfect but, if it had been on your car for the last 40+ years, it wouldn't be. My point is, it's got the right look for a period Kustom or Hot Rod. It's the little details that set one car apart from the rest. This is one of those pieces. Thanks for reading and feel free to ask any questions.