Aluminum frame offset to keep pump head away from trailer or facility wall, (2) Safety clips when pump is being transported, holds the pump in place when you are traveling down the road, 6 screws to attach holder to metal/wood.
Air Compressor Pump Head w/ Silencer Modern 3HP Twin Cylinder Aluminum Pump Head
Modern Air Compressor Pump Head 2-Cylinders Aluminum Pump Head for 3HP Engine