Waterproof welding sleeve, insulated cable butt joint, junction box, hybrid heat shrinkable connection, 50 100 / 250 UDS.
https://www.vogueparade.com/shopping/EN/5/1/1005003194495275/waterproof-welding-sleeve-insulated-cable-butt-joint-junction-box-hybrid-heat-shrinkable-connection-50-100-250-uds//