"THE ITEM CONSIST OF PIECE 4 MADE OF COPPER ALLOY 464,QQ-B-637 WITH 4 MOUNTING HOLES ON BEARING FACE WITH DIA. OF 0.3750 INCH AND 2 ADDITIONAL MOUNTING HOLES ON BEARING FACE MIN,0.2499 IN. BY 0.5625 IN. MAX. DIA.; THE ITEM HAS A PIECE 5 MADE OF COPPER ALLOY,PER QQ-B-639 COMP. 1 1/2 HARD INSIDE DIA. 1.1250 IN. MIN. 1.1270 IN MAX. 0.9375 IN. THICK,2.4980 IN. MIN. AND 2.5020 IN. MAX. WIDTH,3.0000 IN. LENGTH"