1/2 inch 6-12mm ID STRAIN RELIEF DOME NUT 24640 24650, IP68 PG13.5 Connector, fits a 3/4 Inch Hole EC-CONN-ST01

Fits a 20mm hole size. Resistant to most chemicals and solvents Meets UL requirements (seal ring dose not) Seal ring guarantees NEMA 4 x and 6 specifications (IP68) Easy installation: push cable through strain relief and tighten dome nut Use minimum size strain relief that fits your cable Ideal for control cabinets, car washes, hot tubs, instrumentation, underground for direct burial and underwater to 300ft