"ALUMINUM BRONZE,QQ-C-450,0.180 IN. THK 1 SIDE,0.270 IN. THK OPPOSITESIDE,SERRATIONS 0.500 IN. W ON 1 SIDE,0.830 IN. O/A W,1.570 IN. LG,2HOLES DRILLED THRU 0.312 IN. MIN. 0.320 MAX DIA,0.750 IN.APART IN LINE0.530 IN. FROM SIDE BEGINNING 0.410 IN. FROM END"