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 knitting needle cable with different length, of which are 32 cm/ 12 inch, 38 cm/ 15 inch, 42 cm/ 16.5 inch, 55 cm/ 21.6 inch Meterial: the interchangeable circular knitting needles set is mainly made of high material with -plated knitting needles, and these needles feature a glossy , which are and for long term use, helping you with knitting and sewing projects Simple to install: you just need to use the metal tightening key to the needle end attached to the cable securely; cap including screws on the cable can keep your knitting safe when your needle is needed anywhere Set: contains 13 pairs of knitting needles and 4 pieces of cables in different sizes, including accessories are 4 pieces end caps, 2 cable connectors, 2 metal tightening and 1 gripper 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 is a knitting beginner, wants to try both wood and metal knitting needles