Suit Y62 Nissan Patrols with VK56 Engine.
This is the pulley for the idler assembly on the passenger side of the engine next to the waterpump.
The bracket is not included in the sale, as that can be reused and only the pulley needs changing.
The Steel pulley came out on series 1 & 2 models, and then it was changed to a weaker Plastic pully.
You can fit this steel pully to the later series 3 & 4 models for more reliability.