1. Easy installation: You just need to use the metal fastening key to firmly connect the needle end to the cable. The needle cap with screws on the cable can ensure safe knitting when you place the needle anywhere. 2. Material: This set of interchangeable circular knitting needles is mainly made of high - quality materials. The knitting needles are plated, with a smooth surface, durable and suitable for long - term use, which helps you complete knitting and sewing projects. 3. Size: The set includes 13 pairs of aluminum interchangeable knitting needles with sizes of 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 respectively, as well as 4 knitting needle cables of different lengths, which are 32 cm/12 inches, 38 cm/15 inches, 42 cm/16.5 inches, 55 cm/21.6 inches respectively. 4. Set contents: It contains 13 pairs of knitting needles and 4 cables of different sizes. The accessories include 4 needle end caps, 2 cable connectors, 2 metal fastening keys and 1 clip. 5. Features: The circular knitting needle cables are designed to be interchangeable, and the needles are also replaceable, which is convenient for sewing and knitting. You can give this set of products as a practical gift to your mother, grandmother or friends who are just starting to knit and want to try wooden and metal knitting needles. 6. Color: Multi - colored. 7. Material: Metal. 8. Packaging contents: - 1 set of knitting needle set. Only the above packaging contents are included, and no other products are included. 9. Precautions: Light reflection and different monitors may cause the color of the item in the picture to be slightly different from the actual one. The allowable measurement error is +/- 1 - 3 cm.