4 X 4 X 3 X 1-1/8″ Steel Right Angle Plate ~ Solid, one piece angle plate is made from hardened steel. ~ Square and parallel within 0.0002″. ~ Furnished with 1/4″-20 tapped holes. Solid, one piece angle plate is made from hardened steel. Square and parallel within 0.0002″. Furnished with 1/4″-20 tapped holes.