Feature:1. Manufacturing Material: Made of high quality aluminum alloy material, sturdy and durable, which can undoubtedly effectively prolong its service life.2. Anodic Oxidation Process: Adopt anodic oxidation process, so that has excellent rust resistance and corrosion resistance.3. Exquisite Workmanship: Fine workmanship, light weight, easy to carry, will not increase the burden of braking.4. Excellent Smoothness and Comfort: Coated with grease for excellent smoothness and comfortable adjustment. Allowing a micro adjustment of the tension for front and rear gear mechanisms on your bicycle.5. Simple Operation: Simple to operate, easy to use, easy to install and disassemble. Without any difficult requirements even though you use it for the first time.Specification:Item Type: Micro Adjustable ScrewsWeight: Approx.7g / 0.2ozMaterial: Aluminum Alloy Package List:2 x Adjustable Derailleur Regulator Screws