Make Gear Independent From Arm?

I have an animation which involves both arms of a rig moving, but I want the gear to stay one position, being independent from the right arm.

I know It's not a good idea to ask for scripting help without a script, but I can't find anything like this online. Could someone point me in the right direction?

Thanks.

In this case, I recommend you to use this plugin called gear grip editor. Here is the link. https://www.roblox.com/library/174577307/Tool-Grip-Editor-Plugin