The weapon's long description reads as follows: "Shockingly effective."
The Stun Glove's standard hits have a base power of 6.3 and a 0.3-second delay before another punch can be thrown (i.e. the fist weapon has a fire rate of ~3.3 punches per second).
If a Stun Glove is wielded with a second fist weapon, a three-step combo and the Thunder Punch finisher become available to use. To advance through the combo, each punch must be followed within 0.5 seconds by another punch with the same hand. Once the combo is completed, the last punch of the combo must be followed within 0.5 seconds by another punch with the same hand to perform the finisher associated with the opposite hand's fist weapon. Alternating hands (alternating left mouse and right mouse) will not cause a finisher to occur thus allowing a player to pummel enemies with regular attacks and execute a finisher when they wish.
The finisher, Thunder Punch, shoots out two electric bolts, shocking enemies and inflicting brief paralysis. The attack has a base power of 18, and performing this finisher incurs a 0.3-second delay before another punch can be thrown with either hand.
The Stun Glove cannot be found anywhere in the universe. The only way to acquire one is to convert a normal Gauntlet into a Stun Glove, either by crafting it yourself using the blueprint - which appears where other generic Legendary items appear - or by having it crafted for you at Biggy's Reputable Weaponry.
When upgraded at a Weapon Upgrade Anvil to tier 6, standard attack damage increases to 7.35, and Thunder Punch's base power increases to 21. Additionally, the Stun Glove's appearance changes to the one shown below.
Apart from the addition of a gold star to the name, no other changes occur as a result of the upgrade.