Replacement Freehub Body
Shiny new freehub body. Shimano or Campy compatible.
Shimanos are silvery, Campys are black.
Shimanos are available in steel for un-spidered, as in custom cassettes and some high-end cassettes.
Also available in alloy for spidered cassettes. Don't use an alloy body with a loose cassette! You'll ruin it!
Also: Oil the pawls on installation and periodically afterwards. Mineral oil or Phil Wood oil is suggested. Do not put grease on the pawls!