Description: Professional replacement spring for quick release hubs. Made of qualified stainless steel, high intensity and high elastic. Necessary accessories for bicycle hubs. Used for confirmation strength of quick release effectively and preventing quick release loose Great for bike front rear quick release skewer, skewer hollow shaft, axle fixed rod etc. Specification: Material: Stainless Steel Size: approx. 11.3x12x7.1mm / 4.4x4.7x2.8inch Color: Silver Package Includes: 10 Pieces Quick Release Skewers Spring Note: Please allow slightly difference due to manual measurement. Color maybe slightly different since different monitor. Thanks!