According to the manufacturer's information

as indicated by the manufacturer's product text for the 1567 series

tin-plated (Messing

high-mass soldering tasks requiring maximum power and response

Topnøglesæt m/46 dele 1/4" Dynamic Drive toppe MIL6122301401 According to the manufacturer's informationProduct Overview This 46 piece 1 4" square drive socket set from BAHCO, model S460, is a complete set with a metric hex profile and several screwdriver bits. The S460 includes twelve 1 4" hex sockets in metric sizes, as well as a 1 4" quick release ratchet with 60 teeth 6 working angle. Set Contents Twelve 1 4" hex sockets: 4, 4. 5, 5, 5. 5, 6, 7, 8, 9, 10, 11, 12, and 13 mm. 1 4" quick release ratchet with 60 teeth 6 working angle. 1 4" Phillips,