Contact surface: Ni (nickel)

see the manufacturer's catalog page:

Bit type: Z-bit for internal hexagon screws

WIHA specifies use for all kinds of screw connections in trade and industry

Skillevæg ESD t/lagerks. plast t/3020402050206020-4 ESD MIL4114101412 Contact surface: Ni (nickel)ESD cross divider for Treston shelf bins The cross divider D 20 4ESD is an ESD divider designed for internal division of Treston shelf bins 3020, 4020, 5020 and 6020. The product is intended as a cross divider and comes in black. The cross divider D 20 4ESD is made of semiconductive polystyrene (PS) and is ESD safe. Material and finish Frame: semiconductive polystyrene (PS) Colour: black ESD: Yes Typical applications The cross divider D 20 4ESD is