7 tooth drivers with a 3.0 pitch for running the 3″ paddle track. WARNING! It is possible to run the 3 in lug track with this 7 tooth driver but the clearance between track and tunnel is less than adequate. If the track climbs up the tooth of the driver because it is run too loose, damage to the track and tunnel is almost certain. Absolute Power is not responsible for any damage to any track or sled when this driver is used with a 3 in track and stock chaincase. Use at your own risk. Having said all that we have customers with these drivers and a stock chaincase and had no problems.