Features: 1The high-quality metal material used makes the overall pressure resistant and basically meets all daily needs. 2Can be used to replace the built?in spring of the luggage, tensile and compressive, long service life. 3Can be used for all kinds of rope adapters, which can meet most of the requirements of stretching force. 4Small in appearance and light in weight, it can also be used as a DIY accessory for clothing. 5The color is beautiful, and it can also be used as a decorative embellishment for the hairstyle. It is very light and does not put pressure on the head. 6There are 2 colors of fluorescent green and rose red, and the color difference is large, which is suitable for combination according to your own needs and plays a beautiful role. Item Type: Extension Spring Specification: 15 Material: Iron Uses: Clothing accessories and peripherals Size: Approx. 3 x 3 x 1cm / 1.2 x 1.2 x 0.4in Size: Approx. 10mm / 0.39in 11mm / 0.43in 9mm / 0.35in 30mm / 1.2in 15 x Extension Spring