These lattice rods are made from brilliantly polished stainless steel.
They have good surface hardness that will not score from clamp binding screws, and have excellent chemical resistance. The rods are 13mm in diameter and hollow to reduce weight.
The continuously welded walls are 1.6 mm thick and the ends are plugged with red caps.
The stainless steel is SAE T304, the equivalent of AISI 304. The rods are made to metric specifications.