5 Piece Measuring & Marking Set ~ Made of hardend tool steel. ~ Set includes a machinist square, center finder square, round head protractor, carbide tipped scriber & a center punch. ~ Complete in a fitted ABS case. ~ Machinest Square has a 6″ blade x 4″ beam. ~ Center finder square is 1-1/2″. ~ Carbide tipped scriber has a magnet other side. ~ Center punch is 4″.