STEEL ARM WITH BRONZE BEARING; 1.470 IN. BORE DIA; 3.000 IN. FROM CENTER OF BORE TO CENTER OF VALVE CONTACT SURFACE; 2.750 IN. FROM CENTER OF BORE TO CENTER OF TAPPET ADJUSTING SCREW HOLE; 0.438-14 UNC THREAD FOR ADJUSTING SCREW; 0.870 IN. W; 2.725 IN. H; 6.438 IN. OVERALL LG