Waterproof Strain Relief 1/2" Thread w/ 1 round hole 

Fits Cable Size USE #12 & #10

Use the 1/2" threaded connectors to provide a waterproof entrance or exit for wiring on PV module junction boxes, outdoor combiner boxes, and junction boxes. Use the 3/4" connector for larger cables up to 5/8" diameter. They are made of Nylon with Buna-N seals and are resistant to salt water, weak acids, weak alkalis, alcohol, ether, esters, ketones, and mineral, animal and vegetable oils. The threads are 1/2" or 3/4" NPT. Non-corrosive and suitable for direct burial installations.

The oval-hole 1/2" strain relief works great for two-conductor TC cable used for module interconnects and for PV outputs or for UF cable. The two-hole 1/2" connector is designed for use with two #10 or #12 type USE conductors like the ones used for Multi-Contact PV output cables. UL Listed. Suitable for use in NEMA 4, 6 and 12 applications.