Specifications:

• Campagnolo Chorus Cassette
• CS10-CH129 (2010 MY)
• 11 speed
• Steel cogs (largest 6 on carriers, rest individual)
• 12-13-14-15-16-17-19-21-23-26-29T
• Comes in original box
• Approx Weight: 299g
• NOS, new Campagnolo cassette in original box. May have some minor evidence of shelfwear from storage, though there appears to be none of note.