Waterproof Cable Gland Connector IP68 White Black Nylon Plastic PG7 for 3-6.5mm PG7 PG9 PG11 PG13.5 PG16 PG19/21 10pcs
https://www.vogueparade.com/shopping/EN/200282142/1/1005001742753599/waterproof-cable-gland-connector-ip68-white-black-nylon-plastic-pg7-for-3-65mm-pg7-pg9-pg11-pg135-pg16-pg1921-10pcs//