The Microwave Hinge Arm holds the sliding arm that activates the door switch of the appliance. This part is designed to be used with several microwave brands, including Whirlpool®, Maytag®, JennAir® and KitchenAid®; check to see if your model number is compatible. We strongly recommend that you hire a qualified technician to safely install this part. Replacing this part will require advanced mechanical training. Specialized tools, complex testing and appliance calibration may be required.