Draper Hexagon Bit Set and Holder, 1/2" Sq. Dr., 6 12mm (7 Piece)

Amazon

Hardened, tempered and chrome plated for corrosion resistance Manufactured from S2 steel Made from chrome vanadium steel Easy to use Hardened, tempered and chrome plated for corrosion resistance Manufactured from S2 steel Made from chrome vanadium steel Easy to use, Weight: 0.58202037168 pounds, Manufacturer: Draper

ManoMano

Expert Quality , metric bits manufactured from hardened and tempered S2 steel with a shot blasted finish 1/2" square drive holder made from chrome vanadium steel hardened, tempered and chrome plated for corrosion resistance Display packed This is a Draper product.

Electrical World

Expert Quality, metric bits manufactured from hardened and tempered S2 steel with a shot blasted finish. 1/2" square drive holder made from chrome vanadium steel hardened, tempered and chrome plated for corrosion resistance. Display packed.