Make a GameObject active on certain frames of an animation?

Hi, so I've been messing around with a Smash Bros kind of game for the past week and I've been wondering if this was possible. I have a character and two animations, a punch and idle animation. I have an empty GameObject as a child of the hand bone and it moves along with the model fine. I even got the GameObject to be deactivated until the punch animation starts, but let's say the punch animation has 20 frames. I only want the GameObject to be active for frames 8-15, but how do I achieve this?

Been following this tutorial: https://www.youtube.com/watch?v=rhRuaFT55wk