Large selection of matrices: watch case press set is equipped with 20 dies (18-50 mm). Round size: 18/20 21/23 24/26 28/30 31/32 33/34 36/38 40/42 43/45 48/50; 2 round matrices: 16/16 mm 20/25 mm; square size: 20 mm 25 mm 30 mm 35 mm. 40mm 40mm 45 mm..