Feature: 1. Steel Material: It is made of high quality steel, resistant to wear, and can be used for a long time. 2. DIY Spring: You can make your own toys and make special gifts for relatives and friends, which is easy to operate and disassemble. 3. Strong Elasticity: Able to make a variety of different product decorations to make your work more vigorous. 4. Function: 10Pcs double sided spring accessories, suitable for making toys and replacing spring parts damaged by toys. 5. Size: The diameter of the double sided circular spring is 0.9in, and the uncompressed height of the spring is 0.98in. Specification: Item Type: Double Sided Spring Material: Steel Wire Specification: 10Pcs Diameter: Approx. 2.3cm / 0.9in Uncompressed Height: Approx. 2.5cm / 0.98in Product Function: DIY Toys. Package List: 10 x Double Sided Spring