These Interchangeable Circular Knitting Needle pair the size cord and needle tips for your project. The perfectly shaped tapered tip and silky finish of the needle surface make knitting smooth and simple. Tips twist onto very flexible cords. No additional tools are necessary. Use these bamboo tips with any of the Clover Interchangeable Cords (not included). Details: Natural Available in multiple sizes Tapered tips Seamless joint Bamboo, stainless steel, synthetic rubber