Wilton Rolling Pin Guide Rings at Gygi.com. Eliminate the guesswork when you roll out fondant! Slip these easy-to-use guide rings onto the ends of your 20 in. rolling pin to achieve the perfect thickness every time. Includes 1/16 in. (blue) for flower petals and leaves, 3/16 in. (gold) for letters, numbers and appliquÃ© shapes, 1/8 in. (orange) for shapes cut with Wilton Cut-Outs or cookie cutters and for covering cakes with fondant.