Special Tips are designed to produce circulars in 40cm (16") length. Each tip measures 10cm (4") and is to be used with cable of 20cm (8") length. Specially designed to produce 40cm length (cable + tips) Each needle tip is 10cm in length Most Gorgeous Metal Needles manufactured from superior grade light weight metal Vibrant, size specific colours Smooth joins, flexible cables Has the lightness and strength of aluminium Provides hours of pleasurable knitting with no hand fatigue Warm to the touch, and gentle in the hand Laser printed sizes on all needles Very light on hands   You can find the matching cables for these interchangeable needle tips here