CS-7800 Low Spacer 1.0mm 10-Speed Cassette on 9-Speed Freehub
$3.95
Pay for your purchase in four interest-free installments (due every two weeks).
Detail Information
Goes on freehub body behind 10-Speed cassette
Not required when using a 10-Speed Shimano casssette with 13/14/15/16-tooth small cog