Astor's Knuckles

For the duration, whenever you cast Mage Hand, the spectral hand can appear with a pair of spectral brass knuckles. The hand lasts for the duration and moves at your command, mimicking the movements of your own hand. While appearing with brass knuckles, it can make a melee spell attack against a creature within 5 feet of it that you can see. On a hit, the attack deals 1d4 Force damage.

The hand otherwise follows the rules of Mage Hand.

Using a Higher-Level Spell Slot. The Force damage dealt by the spectral hand increases by 1d4 for each spell slot level above 1.