for caravan hitch, trailer hitch, boat hitch... Height adjust when you want to drop down or higher it. To make it safe and firm, the silver receiver with 50mm ball is heavy duty. 3500kg bearing -horizontal, 200kg- vertical. a nice choice for you. This is an adapter for 2inch tubes. outer size is 50mm x 50mm. You can use as drop plate or up raise plate. Note: only Fit these US STYLE TOWBAR of fits 85*45mm from us. not fit UK standard towbar of 90*40mm.
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