Single wire for interchangeable circular needles. Wire is available in three sizes:
M1.8 fits needle size 2.5mm – 3.25mm
M2 fits needle size 3.5mm – 5mm
M4 fits needle size 5.5mm – 10mm
Wires are available in four lengths, the length is measured from needle tip to the end of the needle.
25 cm = 40 cm (only fits 10 cm needle length)
32 cm = 60 cm
52 cm = 80 cm
72 cm = 100 cm