This is sold as a set that contains eight washers. These parts attach to the tank and are made out of metal. They are genuine items that are supplied by the original equipment manufacturer for use with Craftsman air compressors. During replacement, it may require a wrench to help install these parts correctly. They will require replacing if they become bent or broken.
This is a genuine manufacturer-sourced replacement part that is supplied for use with Craftsman grinders. It is the special cover for the unit, please refer to the appropriate diagrams of your model for the correct location and application of this component. This black cover is made of high-quality plastic material and it is sold individually, please note the hardware to secure it is sold separately.