You'll order the same overall (in this case 41/2") and can only HOPE the screw-holes match ::) ...chances of finding the same manufacturer that made your originals are slim and that measurement between the holes could change...
Question...what's wrong w/ the ones you have now?...if stainless steel, it's not too difficult to polish them back to new finish...if chrome on brass or zinc, they can be replated...
Are your chocks like the ones shown on this dirty old boat?
