"MATL FIRST LAYER: 6 PLIES MS-521 WOVEN GLASS EPOXY AND 4 PLIES MS-552 UNIDIRECTIONAL GRAPHITE EPOXY; 2ND LAYER AF-147 FILM ADHESIVE; 3RD LAYER: 13 PLIES MS-559 WOVEN GRAPHITE EPOXY; 2 HOLES: 0.75 IN. DIA AND 0.50 IN. DIA, POLYTETRAFLUOROETHYLENE DISCS; METAL PULLOUTS 0.010 IN. THICK, 1 IN. DEEP; ULTRASONIC"