This set is, essentially, three small based air cleaners from the small center carb of the 59 to 65 air cleaners. Show Quality, mirror chrome. Excellent reproduction. Included in sets ,three bases, three paper elements, three chrome lids, three bottleneck studs, three correct air cleaner gaskets. I no longer include the chrome wing nuts due to the increased cost. Chrome wing nuts are available on the web site. NO disappointments. Also fits 348 tripowers and Olds J-2