Feature: 1. Powerful Features: Due to the alloy material, the bolt has the features of being rust proof, light and compact, aslo easy to carry, suitable for long term use. 2. Fine Workmanship: Automatic thread rolling machine processing, thread dense with high strength, stable fastening process, but also strengthen the overall finish, also has bright beautiful color. 3. Alloy Material: Made of high quality alloy with waterproof, rust and resistant features, having good performance for long service life. 4. Portable Item: Designed with light weight and high strength, will not increase the burden or cause additional energy waste. 5. Package Content: There is only a bolt screw included in the package, other tools and accessories need to be prepared by your self. Thanks for your understanding. Specification: Item Type: Headset Cap Bolt Material: Alloy Application: for Mountain Bike Product Size: Approx.M6x40mm?Column Head? Gross Weight: Approx.10g/0.35oz Package List: 1 x Bolt Screw