Features: High strength, good corrosion resistance, and long service life. Even for novice, installation and disassembly are simple and convenient. Preventing Falling gels are used to increase the adhesion of screws, not easy to loose after installation. Conssit of good-qualities alloys steel, wear-resistant and corrosion-resistant. Compatibles with almost various types of disc brakes for bicycles. Specifications: Color:Three elections Dimension:18×6mm/0.71×0.24in Component:Alloys Steel Package Includes: 12pcs Bicycles Disc Brake Bolts note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you will not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual color.