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…