Attributes . Capacity Square: 13/64", 15/64", 9/32-5/16", 23/64 -25/64"; Capacity Triangular: 9/32", 5/16-23/64", 25/64-7/16"; Capacity Two-Way Key Bit: 1/8-13/64"; Step-Like Square: 15/64", 9/32", 5/16", 23/64", 25/64"; Capacity Half-Moon: 15/64" . Names