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") Corner Braces, L Shaped, Right Angle Support Fixing Repair Bracket
10x 75mm (3") Tee Plates T Mending Bracket Brace Support Fixing Joining Repair
75mm / 3” Flat Headed Multi Purpose Nails Fasteners Fixings Carpentry
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