Novita Birch Circular Needles (40 cm) are lightweight, smooth and warm to the touch, providing you with a wonderful knitting experience. They are made of FSC certified birch. Circular needles are used for knitting in the round. Our 40 cm circular needles are ideal for hats and other accessories as well as creating features like necklines on jumpers. The circular needles are available in sizes 2.5–12.0 mm.