Features: 100% brand new and high quality Made of titanium alloy, super light and durable. Perfectly suitable for bike rear derailleur guide wheel. Light weight, high strength, good corrosion resistance. Professional and durable,you deseve it. Contact us if you have questions,we will try Our best to serve for you. Package Includes: 2x M5 Screws. Specifications: Product Name: Bicycle Rear Wheel Material: Titanium Alloy Specifications: M5 Size: 16x 7.7x5mm/0.63x0.30x0.19in Color:Black Color Gold Silver Net Weight: 1.1g note: Please allow 0-1cm error due to manual measurement. 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. Thank you