Corner Braces 3/4 By 1/2 By 0.70 Inch Zinc Plated Steel 4 Pack With Screws. Hole sizes fit Phillips Flat Screws sized #7. Drill a pilot hole with a 3/32 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.