Manufactured from high carbon steel hardened and tempered. Finely ground and polished with honed cutting edges. Supplied in wooden presentation box. Display packed. Contents: 1 x 1/4" mortice square, 1 x 5/16" mortice square, 1 x 3/8" mortice square, 1 x 1/2" mortice square, 1 x 5/8" mortice square