How do I choose the anchored part in a HingeConstraint?

I have this problem where the larger brick is being spun around instead of the smaller brick: https://i.gyazo.com/c5e3a039cfa2023990e46aa7115c6b07.gif

How do I fix this?

Well changing the MotorMaxTorque of my HingeConstraint to more than 0 made it use physical torque instead of the imaginary infinite spinning it was using before.