Auction is for (2) 7 tooth 2.52 pitch drivers with adapter bushings which convert from hex shaft to the .875 square drive shaft found on Bravo, Enticer and Sno Scoot sleds. The 7 tooth are approximately 5.5" in diameter.  With 3.29 pitch tracks no no longer being made, these 2.52 pitch drivers provide abundant track options for sleds needing replacement tracks. The bushings are a press fit. Bushings are pre installed so drivers are ready to install onto your existing shaft.