SAMHUE IP66 Waterproof Outdoor 4 Way Cable Plastic Connector Gland Electrical Junction Box for 4mm-10mm Cable Diameter Pack of 2

These IP 65 or better rated boxes are superbly resourced with interchangeable cable gland sizes to ensure moisture ingress is defeated. The rigid boxes provide a greater than average strength to something of that size and the stainless steel screws provide a reassurance of longevity without corrosion. Provided with 2 x 3 terminal chocblocs but at different sizes which might relate to the two gland sizes, but with 4 gland entry points the termination potential is certainly greater than 3. That said, at the price and quality, definitely buy again and recommend.

It says single on the box but there are actually 2 in the box. I used one over a month ago, up to now no problems with it and it rains a lot here in Northern Ireland.