Simpson Strong-Tie Rigid Tie 0.625-in x 5.938-in x 5.938-in 18-Gauge G90 Galvanized Steel Angle in the Angles, Brackets & Braces department at Lowes.com
2" x 1-1/2" x 2-3/4" 18-Gauge Galvanized Steel Angle
Accurately Measure Angles With This Heavy-duty Stainless Steel Angle Gauge Protractor! - Temu
National Hardware N179-952 Solid Angle 12 Gauge Steel 1-1/4 By 1-1/4 By 36 Inch Galvanized: Steel Angles Smooth (038613179950-1)
Stainless Steel Digital Angle Ruler Gauge Finder Meter Protractor Measure Metric and Imperial Scale for Automobile constructions Boating Woodworking (Stainless Steel Ruler) - Amazon.com