①. Simple to install: you just need to use the metal tightening key to attach the needle end to the cable securely; the cap including screws on the cable can keep your knitting safe when the needle is needed anywhere. ②. Material: the interchangeable circular knitting needles set is mainly made of metal with plated knitting needles, and these needles feature a glossy surface, which are durable for long term use, helping you with knitting and sewing projects. ③. Size: the sets come with 13 pairs of aluminum interchangeable knitting needles, including 2.75 mm, 3.25 mm, 3.5 mm, 3.75 mm, 4.0 mm, 4.5 mm, 5.0 mm, 5.5 mm, 6.0 mm, 7.0 mm, 8.0 mm, 9.0 mm and 10.0 mm, and 4 pieces of knitting needle cable with different lengths, which are 32 cm/12 inch, 38 cm/15 inch, 42 cm/16.5 inch, 55 cm/21.6 inch. ④. Set: contains 13 pairs of knitting needles and 4 pieces of cables in different sizes, including accessories: 4 pieces of end caps, 2 cable connectors, 2 metal tightening keys and 1 gripper. ⑤. Feature: circular knitting needle cable is in interchangeable design, and the needles are replaceable, convenient for sewing and knitting use; You can send the set as a practical gift for your mom, grandma, friend who is a knitting beginner and wants to try both wood and metal knitting needles. ⑥. Colour: Multicolor ⑦. Material: Metal ⑧. Package Contents: 1 x Knitting Needle Set. Only the above package content, other products are not included. ⑨. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.