Retaining tubes RK are made from drawn and natural color anodized aluminum square tubes by sawing.
Retaining tubes are intended as accessories for use with clamp mountings, and the outer dimensions are matched accordingly.
Retaining tubes are only available in the lengths indicated in the table.
A laser-engraved length scale (type LS) is also possible as an option.
Retaining tubes can additionally be used as cable pass-throughs.