With 4 screw holes, which are countersunk so you can neatly fit them with the screw heads flush. 75mm (3") x 16mm wide. These are suitable for number 7 size screws.
10x 75mm (3") Flat Corner Right Angle Plate Bracket Brace, Support Fixing Repair
10x 75mm (3") Tee Plates T Mending Bracket Brace Support Fixing Joining Repair
4x 75mm (3") Flat Corner Right Angle Plate Bracket Brace, Support Fixing Repair
10x 75mm Steel Mending Fixing L Plate Flat Brackets Corner Repair Braces Joining
10x 75mm T Plate Steel Mending Fixing Flat Brackets Corner Repair Braces Joining
TERF® 75mm X 3.75mm Galvanised Clout Nails 75mm (3 inch) X 3.75mm Large Head Clout Nails for Roofing DIY and Crafts Home Decor Woodwork Furniture and Construction - Pack of 50