This ESC is T-Motor's 4-in-1 version of their popular F45A ESC. This 4-in-1 ESC packs 45A into an industrialized PCB layout made with premium features such as a 32bit main control chip, BLHeli_32 firmware, and 6s support.
The F45A 4-in-1 comes with a heatsink attached to keep heat away from sensitive electronics.
Another small bonus is the 4 x motor wire PCBs that come with this ESC. These go on your quad arms and help prevent damage to your motor wires from prop strikes or other damage. A neat little touch to include them.