Check the listing for details. 2 Set Adjustable Knitting Crochet Loop Ring for Fingers, Silver. Condition: New. Listed at 17.52 USD. As an excellent professional tool, the metal yarn tension ring can help you knit, hook thread, prevent cotton thread from knotting, help maintain the tension of the cotton thread, help improve knitting efficiency, and weave beautiful handicrafts.Specification:Color: SilverMaterial: Stainless SteelDiameter: 2 cm/ 0.79 inch; 1.7 cm/ 0.67 inchWidth: 10.7 mm/ 0.42 inchHeight: 2.8 cm/ 1.1 inch; 2.6 cm/ 2.02 inchPacking List: 2 Set x Open Crochet Holder ( 2 pcs of each size )Advantage:The crochet tension ring is made of good quality stainless steel with a smooth surface, allowing the cotton thread to move smoothly; it is not easy to rust or break and is durable.The adjustable opening design is suitable for fingers of various sizes, with suitable tightness and comfortable wearing, which helps to improve the efficiency of knitting.