Hole sizes fit Phillips flat screws sized #9. Drill a pilot hole with a 7/64 in sized drill bit when using wood screws. Used for reinforcing inside of right angle corner joints. Black powder coat finish for improved weather resistance. Corner Brace 3 By 3/4 By 0.11 Inch Zinc Plated Steel Bulk No Screws. Hole sizes fit Phillips Flat Screws sized #9. Drill a pilot hole with a 7/64 inches sized drill bit when using wood screws. Designed for chests, screens, windows, furniture, etc. Used for reinforcing inside of right angle corner joints. Screw holes are countersunk. Designed for chest, screens, windows and furniture. Designed for chest, screens, windows and furniture.