The Veloce 9 speed cassette is the right choice to keep your Campagnolo 9 speed vintage drivetrain running properly The Veloce grade cassette features heat-treated cogs with a chromed finish for added durability. The special Ultra-Drive profiling of the teeth makes for smooth and accurate shifting. Campagnolo took the time to drill out the upper cogs for additional weight savings. This 9 speed cassette will fit all current Campagnolo spline hubs, choose cassette size.