Viega PEX Press tools come with different colored handles so that you can quickly tell exactly which tool is which. All of the sizes have a different color- 3/8" is green, 1/2" is yellow, 3/4" is blue, and 1" is orange. If you're looking to make a 1" connection, simply grab the tool with the orange handle and you're ready to go.
PEX Tools for PEX Plumbing can be found at www.supplyhouse.com