Vardhman Aluminum 80cm Pony Circular Knitting Pins, No 10, 11,12, White -Set of 3 The circular knitting pins have two pointed shanks joined by a long flexible cord. The cord is strong and smooth and allows the weight of the work to rest in the lap rather than on the needles. There is less strain on the hands and wrists as the circular pins accommodate a large number of stitches. Circular knitting pins can be used for flat and circular knitting in rounds. The length of the flexible cord will determine the length of the size of the garment. The transition point where the shank is connected to the flexible cord is smooth for stitches and is firmly fixed to avoid the cord separating while knitting.