One pair of 40mm BDNC (BFC-D45-7-32-012) drivers for your min(amame) build complete with driver mount and earpad mount.

Each driver is carefully mounted in its protective driver mount and has the 3.5mm female socket pre-soldered to reduce the risk of damage when installing.

Pairs of driver are impedance-matched so the drivers have the same volume in both ears, something not guaranteed unless they're ordered in bulk and tested.

Datasheet can be found here