Product Review (submitted on February 1, 2019):
I admit thinking these were silly and unnecessary. Then I added a set to an order(just to get up to free shipping). These are the best little things! Sturdy, easy to see, and using them made all my piecing twice as fast! No more double checking which tiny square is which... just pick it up and go! Absolutely essential for complicated interesting blocks! They take all the intimidation out of Elizabeth Hartmann!