Stans No Tubes 11s to 10s Cassette Spacer (1.8mm)

1.8mm freehub spacer to use 8/9/10 speed cassettes on 11 speed freehubs

Also allows use of XD cassettes on XD-R freehubs

Many 11/12 speed MTB cassettes also need this spacer for use on 11 speed freehubs. Specifically SRAM 11-42 and 11-50 cassettes.

Misc : For Neo hubs