Campagnolo Super Record Cassette Speed:12 – 11-29T CS19-SR1219. 12 speed Super Record cassette. Same spacing as the 11 speed cassette, due to thinner sprockets and tighter spacing. Perfect compability with 9-11 speed Campagnolo freehub bodies. All steel construction with special surface treatment increases durability versus 11 speed cassettes. Single tooth jumps up to the 7th smallest cog. 6 biggest cogs split on 2 triplets, each machined from a single steel block. Faster and quieter shifting. Bike / Ebike Chains, Rings & Parts. Bike / Ebike Cranks / Pedals / Hubs. For MORE GREAT DEALS on powersports parts and accessories! Your friends at MOTOMENTUM appreciate your Business!