The crane bearing consists of high-strength polyurethane casting, it is cast in one with Alurundmaterial 20.00 mm. Through the core hole 10.00 mm, the cable / hydraulic for the crane arm are conducted. All pivot points have already been rubbed to 6.0 mm H7. The surface of the crane bearing has already been detailed with all important small parts. Small sprue still need to be tidied. It is recommended to complete the top with a little lukewarm water and mild detergent to clean the release agent remains.