This is a genuine OEM part. The Ingersoll Rand reverse valve knob screw is compatible with the 231C 1/2" Drive Air Impact Wrench. The metal screw fastens the reverse valve knob onto the housing, and is sold individually. You will need a hex key for the repair.
The valve fits between the spring and the valve seat. It is made out of plastic and is sold individually. This is a genuine item that is supplied by the original equipment manufacturer for use with Ingersoll Rand impact wrenches. When replacing this part a wrench set may be needed. This part may become broken and will need to be replaced.
The valve seat goes between the housing assembly and the valve. This item is made out of plastic and is available individually. This is a genuine replacement part sourced from the original manufacturer for use with impact tools and impact wrenches made by Ingersoll Rand. When replacing this part an adjustable wrench might be required during the installation process. It will require replacing if it becomes broken.