Dritz Clip 'N Turn for Sewing Product Use to insert elastic or ribbon into casings; Clip N Turn Set 2pc- Clips on end of turners hold delicate or slippery fabric securely as tube is turned Can also be used for inserting cording into a tube to create fabric covered cord One size works for 3/8 inch to 1 inch fabric tubes and the other size works for 3/4 inch or larger fabric tubes