Steel or 1.4305 stainless steel

Steel trivalent blue passivated.
Stainless steel, bright.

Swivel feet consist of a threaded spindle and a plate joined together. Any threaded spindle can be combined with any plate.
The height of the complete swivel foot can be calculated from the length of the threaded spindle + height of hexagon + 22.5 mm.
(Overall height of swivel foot = L + L1 + 22.5 mm)

Depending on the version, threaded spindles can have a thread undercut in front of the hexagon.