Full Flow Round 12''X3'' Air Filter Assembly Kit Red Kit includes:1 x 12" Chrome Top / 1x Chrome Base / 1 x 3" Tall High-Flow Red Washable & Reusable Filter / 1 x Muting stud / 1 x Wing nut / 3 x Air Cleaner Riser kit. Fitment: SBC, 4 barrel carburetors, commonly found on Chevy, Chrysler, Ford V8 engines. Top Type: Steel Trim & Cotton Gauze Washable. Base Type: Flat Stamped Steel. Element Type: 12" x 3" Tall - Cotton Gauze Washable Element. Fits air cleaner and carburetor combinations with 5-1/8 inch diameter neck. Includes 3 riser rings that can be stacked for increased heights, which is 1/2 inch, 1 inch, and 1 1/2 inch correspondingly.