Yeah, none of my bits have got any quality ID stamped on them.
I've got the following bits.
Set 1: T10, T15, T25, S4, S5, S6, PH1, PH3
Set 2: T10, T15, T20, T25, T30, S5, S7, PH1
Bosch Set: PH0, PH1, PH2, PZ1, PZ2, S4, T10, T20, HEX4, HEX5
Socket Set: 4mm, 4.5mm, 5mm, 5.5mm, 6mm, 7mm...