2.5 SQ MM - Conductor size is 2.5mm2. Bigger than the 1.5mm2 you sent before. In KE this is standard for socket circuits + heavy appliances like fridges, washing machines, water heaters.
Twin with Earth - 3 cores: 2 current-carrying wires + 1 earth for safety/grounding. Earth is a must for sockets.
300/500V, 90M - Rated 300/500V for normal house wiring. Each roll is 90 meters long. Also “ISO 9001 Certified” on the label.