MellieKQuilter

http://www.quiltingboard.com/t-51221-1.htm

This is a good topic that has examples of patterns and how to make a homemade version of the tool.

http://www.country-schoolhouse.com/twister_tool.htm

This is the site where the tool originated from.

Here is a Moda Bake Shop Pattern:

http://www.modabakeshop.com/2011/03/pinwheel-twist.html