TheDemolitionTeam cassette wheelfeatures a Demolition WhistlerLite cassette hub laced to a DemolitionTeam rim with black spokes and brass nipples. The Whistler cassette hub features a 6061-T6 aluminum hub shell, a 14mm heat-treated chromoly axle with an allen insert for easy removal, 2 large sealed bearings, and a 1pc 3-pawl driver with 3 bearings.