"ALUMINUM ALLOY,QQ-A-200/3,2024-T4,3.080 IN. LG,3.000 IN. W ATBASE,1.470 IN. H,SERRATED ON ONE SIDE,0.437 IN. MIN,0.438 IN. MAXBUSHING BORE,4 SLOTS 0.620 IN. LG,0.206 IN. MIN,0.214 IN. MAX W,4 MOUNTING HOLES 0.208 IN. MIN,0.214 IN. MAX DIA,COUNTERSINK 0.470 IN. DIA AND 100 DEGREES"