Fast and clever, this kit includes the main circular knitting needle sizes. Interchangeable: you just have to change the tips or the cable to choose the desired size! The laminated wooden needles (rosewood style) are specially designed to offer an incomparable slide. This similar box contains:- 8 pairs of needles to Circular knitting: 3.5 mm, 4.0 mm, 4.5 mm, 5.0 mm, 5.5 mm, 6.0 mm, 7.0 mm and 8.0 mm 12.5 cm long. - 4 swivel cables: 60 cm, 2x 80 cm and 100 cm. - 8 tips and 4 canable greenhouses. Set of the box: 27 x 18.5 x 4 cm. How does it work? 1/ I choose the length of the cable and the size of my needles. 2/ I screw my needles at the ends of the cable. In use of knitpro knitpro needles