2202721400 is an OEM motor mount bracket from Chicago Pneumatic and Atlas Copco. This coupling was used on a wide array of their rotary screw air compressors.
Please contact us with your model and serial number for confirmation this item works with your air compressor.
Part #: 2200902714
Part #: 2200902301
Part #: 2200902017
Part #: 2200902813
Part #: 2200902223
Part #: 6231638800