Extension, for FIRST MATE, COMMANDER 500 slewing crane, powder coated. Supplied = pre-assembled, final assembly by customer. Height = 380 mm. Product type = accessories for slewing cranes. For extending the height of the slewing crane. Simple and quick assembly. High quality workmanship. If the standard height of the crane is not sufficient, then this module makes a fast extension possible. It is simply inserted between the crane and the mounting module.