Circular needles are a type of knitting needle that consists of two pointed ends connected by a flexible cable. This design allows knitters to work on projects in the round, such as sweaters or hats, without the seams that come from traditional flat knitting. The length of the cable can vary, accommodating different project sizes. These needles come in various sizes and materials, including metal, wood, and plastic. Circular needles are popular among knitters because they distribute the weight of the project evenly, making it easier to handle larger items. They can also be used for flat knitting by simply turning the work at the end of each row.