Brass knuckle is a common weapon used by fighting boxers. It will be effectively used to strengthen the lethality of fighting boxers. It is changeable and can also integrate other weapons into boxing routines. Novices just start to practice, their fingers will not adapt. They can wrap them with tape or cloth tape first, which will be more comfortable to hold.

Weapons set on hands or finger joints actually existed in ancient times, such as hand armour hook, finger knife, tiger claw and so on. Brass knuckle is a kind of weapon used to put on the fingers in close combat. It can be well combined with the user’s boxing. Its metal texture (which is also made of other materials now) also greatly improves the power of attack.

Source: @callyn_tattoos