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/* 4 chapes articulées avec filetage ext. */
** [https://eu.shop.bossard.com/group/index.cfm?app_page=0:31100:30002:19414:3 Bossard art. no. 3547684]
* alternative intéressante à [http://shop.larryvsharry.com/shop/spare-parts/rubber-covered-balljoint.html 31 EUR chez shop.larryvsharry.com], [http://www.cargobicycles.org/Rubber-covered-balljoint 35 CHF chez Obst&Gemüse], [http://www.directindustry.de/prod/chiavette-unificate-spa/product-28993-352304.html direct industry] (filetage int., modifier design...)
* http://www.hpceurope.com/docFichesTechniques/GuidageEnRotation_Rotules.pdf
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