It is a stainless steel nozzle, but the real problem is that it’s not just the nozzle, it’s either “hotend” with cooling ribs etc, with lots of fiddling to connect wires etc, or “complete hotend” that also comes with a fan so more of the wires are already connected.
See https://us.store.bambulab.com/products/bambu-hotend-p1-series?variant=40923060797576
I wish they did like Prusa where you can also buy assembly, but they have one that is basically an adapter so you can use any regular cheap nozzle.
This is the answer. They are bridges to support the next layer.