rohawa:
would those 2 motors work well for my purpose or would you suggest something else?
If it's only for a robotic hand and not for a rock crusher, you probably don't actually need a high torque metal geared servo and could get away with something much cheaper. To know for sure you're need to know what sort of force, travel and speed you need from your servos. Then you can compare those requirements against the speed/torque ratings to see which servos would be adequate.