Fixed circular needles for knitting in the round or accommodating wider rows flat. A flexible cord joins two aluminum tips to distribute weight comfortably and reduce hand strain. The 40 cm (15.7 in.) length is ideal for hats, necklines and sleeves. At 3.75 mm (US 5), these needles balance control and speed; pair with appropriate yarns and swatch to confirm gauge and fabric feel. Swatch to verify gauge and fabric hand before starting. Choose yarn weights appropriate to the needle size for even tension and a clean finish.