Attributes . SAE Sizes: 1/16 in. , 5/64 in. , 3/32 in. , 7/64 in. , 1/8 in. , 9/64 in. , 5/32 in. , 3/16 in. , 1/4 in. ; Metric Sizes: 1.5mm, 2mm, 2.5mm, 3mm, 4mm, 5mm, 6mm; Star Sizes: T6, T7, T8, T9, T10, T15, T20, T25 . Names