Build the circulars you use most. These 13cm Symfonie interchangeable tips are crafted from laminated birch and polished for a smooth, easy glide. The tapered points and secure screw-in join keep stitches moving cleanly, while flexible KnitPro cables lie flat without kinks. (Important note: 40cm cables are designed for short tips only.) Comfortable in hand, durable in usesimple, beautiful tools youll reach for every day