RPC 14-Inch Round Muscle Car Style Air Cleaner Sets are designed to fit single quad carburetors. RPC offers these round air cleaner sets in either a chrome-plated or stainless steel top with a variety of chrome-plated steel bases that range from flat, recessed, hi-lip, off-set, and dominator styles. RPC Round Air Cleaner Sets are machined from stainless steel castings and include your choice of a 3 or 4-inch thick paper or pre-oiled washable filter element. These Round Air Cleaner Sets include a steel stud with a wing nut.