• It is made of high tensile steel and made by the technology of quench-temper hardening, so it has higher strength, durability and extreme resistance to abrasion
• The strong anti-oxidation makes it hard to rust to has a long service life. Because of the unique design of the gear sprocket exclusively for mountain bikes, you can control the shift function well
• We adopted the hollow design, and the weight is reduced to some extent
• The surface with the technology of chrome plating. There is no fading on the plated surface. And the surface of black has a fine appearance and will give you a luxurious feel

Specification:

• Teeth ratio: 11-13-16-20-24-30-36-42-50T
• Material: steel
• Compatible with: Mountain bike HG hubs
• Weight: 533g