“ OEM/ODM China Spring Bellow Cover - Nylon Flexible Accordion Bellow Cover - JINAO https://www.jinaobellowscover.com/oemodm-china-spring-bellow-cover-nylon-flexible-accordion-bellow-cover-jinao-5-product/
DIN 971 Hex Nut https://www.leader-fasteners.com/din-971-hex-nut.html ”