"MATERIAL ALUMINUM ALLOY,O/A DIM. 1.490 IN. DIA BY 1.080 IN. DEEP,SMALL END DIM. 0.320 IN. O/A DIA W/THD SIZE 0.190-24 UNC-2B BY 0.120 IN. DEEP,INSIDE DIM. 1.190 IN. DIA TO DEPTH OF 1.900 IN. AND TAPERS APPROX 45 DEG TO 0.250 IN. DIA FOR DEPTH OF 0.730 AND 0.730 IN. DIA FOR DEPTH OF 0.060 IN.,MARKED MAIN FILTER ON FRONT"