This remarkable cog is designed and tested for track cycling & racing. CNC machined from high grade stainless steel in Taiwan and then ‘Titanium Nitrite’ (Ti-Ni) coated for durability and smooth engagement (giving it a beautiful golden finish). Smooth engagement means that while riding in a velodrome, the elegance of a track bike flying through the corners is optimized by a soundless drivetrain. These are crafted in Taiwan with top quality control; one batch at a time. It’s truly a component that will outlast a bike. Ready to ship worldwide. Wholesale prices available upon request.