Japan's Fuji 178 & 272 series sets arc metric: the number of model specifications sheet 178A301/32 'to 1 / 4' by 64ths178B3217/64 'to 1 / 2' by 64ths178MAA20.1 to 1.0mm by.1178MA341 to 3mm by.253 to 7mm by.5178MB327.5 to 15mm by .5178 MC1616 to 23mm by 1178MD1424 to 30mm by 1178ME2031 to 40mm by 1178MF2041 to 50mm by 1178MR3015.5 to 20mm by.520 to 25mm by 1178-112201.1 to 2.0mm by.1 sus steel178-213202.1 to 3.0mm by.1 sus steel272A161/32 'to 17/64' by 64ths272B169/32 'to 33/64' by 64ths272MAA10.1 to 1.0mm by.1272MA18.75 to 5mm by.25272MB165.5 to 13mm by.5272MC1013 to 22mm by 1272MD823 to 30mm by 1272ME1031 to 40mm by 1272MF1041 to 50mm by 1272-112101.1 to 2.0mm by.1 sus steel272-213102.1 to 3.0mm by.1 sus steel Japan's Fuji dental regulations: regulatory teeth / number of model point of view specification sheet NO .42460 ° 4 to 30 per inchNO.52660 ° 32 jto 82 per inchNO.63060 ° 4 to 42per inchNO.402260 ° 9 to 40 per inchNO. ° 4 to 60 per inchNO. ° 2.1 / 4 to 28 per inchNO. °. 25 to 32.5mmNO. ° .4 to 7.0mmNO. ° .5 to 7.0mmNO. ° 1.0 to 11.5mmNO. ° ISO.2 to 6.0mmN