The new KnitPro Smart Stix needles are graduated every 2 cm to avoid leaving your knitting to measure! The needles are made of metal, they are light and solid. The needles are arranged on an elegant white and gray imitation pocket. This set contains: 7 pairs of metal needles: 3.0, 3.5 mm, 4.0 mm, 4.5 mm, 5.0 mm, 5.5 mm and 6.0 mm 10 cm long .4 Interchangeable needle cords in black: 2 x 40 cm and 2 x 50 cm. 8 tips and 4 clamps of the box: 27.5 x 19 x 5 cm. It works? 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