The maximum circular arc diameter of the vessel is 55mm; the protective cover is provided with an anti shock pad block. It consists of container, sand, a set of protection, etc.
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Many parts have been chromium-plated and galvanized for a longer life. Steering Box With Hourglass Screw Cutaway model is carefully sectioned for training purposes, professionally painted with different colours to better differentiate the various parts and cross-sections.
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