... G/SQ.MWidthWire Gauge (Diameter) BWGInchmmTolerance(mm)3/8"10mm±1.00.7mm - 1452' - 1M27, 26, 25, 24 ... , 231/2"13mm±1.50.7mm - 952' - 2M25, 24, 23, 22, ... - 2M25, 24, 23, 22, 21, 20, 19, 181-1/4"31mm±4.00.9mm - 401' - 2M23, 22, 21, ... 20, 19, 181-1/2"40mm±5.01.0mm - 451' - 2M23, 22, 21 ... - 401' - 2M23, 22, 21, 20, 19, 182-1/2"65mm±7.01.0mm - 301' - 2M21, 20, 19 ...