Your looking at a complete set of Metric Hex Socket Bits.
All these bits are 3/8" drive.
These are made to last and are built from Drop forged, heat treated carbon steel with chrome plated finish for corrosion resistance.
Metric set includes sizes:
#2 Phillips, 1/4” straight, 3 mm, 4 mm, 5 mm, 5.5 mm, 6 mm, 8 mm, and 10 mm