Features: These quality alloy screws ensure durability and resistance to rust and corrosion. Lightweight and available in various colors, these screws are compatible with a 4mm key use. Designed for bike enthusiasts, repair technicians, and outdoor sports lovers. Perfect for bike assembly, maintenance, and customization, providing reliable and secure fastening for your handlebar stem. Suitable for both professional cyclists and casual riders, these bolts offer dependable performances and secure fastening. Specifications: Material: titanium alloy Standard: M4x13.5mm/M4x20mm(optional) Whole length: approx 17.5mm/24mm(optional) Screw length: approx 13.5mm/20mm(optional) Package Includes: 1xBike Bolt note: Please allow 1 to 3cm error due to manual measurement, please make sure you do not mind before you bid, Due to the difference between different monitors, the picture may not reflect the actual color of the item.