When a recipe says, 'roll dough to 1/4" thick' it's pretty much an eyeball and a prayer, right? Take the guesswork out of getting your dough to the perfect thickness. Simply select the right set of rings and slip them on your rolling pin barrel. Roll your dough to an even thickness, and just to the right specification for your favorite recipe. Color coded for 1/16", 1/8", 1/4", and 3/8".