Is this what I need for my 2009 Mac Pro 2.93 ghz?

I have a 2009 Mac Pro 2.93hghz with 6gbs of RAM. I want to fill up the DIMM slots with all the RAM possible. Is this what I need to work with this computer?

Apple Memory Module 2GB 1333MHz DDR3 ECC 1x2GB

Apple Memory Module 2GB 1333MHz DDR3 ECC 1x2GB

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