The tube holder is made of polyamide. It is used for fixing tube Ø 32 mm. It can also be used to secure the oar during storage or transport. Installed in the castle.
In combination with the oarlock Rl032, it allows you to assemble an onboard round rail from the oar for the installation of additional accessories and equipment. The adapter has an O-ring which must be periodically lubricated with silicone grease.