Campagnolo HG Compatible Shimano 33mm FreehubCampagnolo FH-HGA33 Shimano HG compatible drive body for 33mm ratchets.Allows conversion of Shamal Carbon N3W wheels with 33mm ratchets to accommodate the Shimano HG cassette.Campagnolo original spare part. Campagnolo HG Compatible Shimano 33mm FreehubCampagnolo FH-HGA33 Shimano HG compatible drive body for 33mm ratchets.Allows conversion of Shamal Carbon N3W wheels with 33mm ratchets to accommodate the Shimano HG cassette.Campagnolo original spare part.