7" Diameter Serpentine Belt Clutch for White Magic Pro-1200. Used on WM-1200-HV Units and many units that were upgraded to the 7" clutch from the 6" clutch. Over double the torque capacity of the 6" clutch. The clutch in the White Magic is the failure point when driveline issues are present, and due to that we cannot warranty any clutches not installed in our service facility. In our experience using the Ogura 7" clutch, they have a 0% failure rate if installed correctly and no other incorrect factors are present.