Interchangeable Afghan Crochet Hook Set Used only once for a few centimeters of test knitting, like new. ● Hook Sizes 3.0, 3.5, 4.0, 4.5, 5.0, 5.5, 6.0 mm 6.5, 7.0, 8.0, 9.0, 10.0 mm ● Cords 40cm, 60cm, 80cm, 100cm Also includes a separately purchased 16cm cord ● Accessories The cords are swivel type for stress-free knitting.