7 punches in the diameters 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", and 5/8". Maximum sheet thickness is 18 ga. (1 mm). Overall dimensions: 2 3/8" x 2 3/8" x 1 1/2". The sizes of each punch are clearly marked on the base. Made in India.