This is a A-566-4420 Friction Clutch, I-Type PN: 566-4420Main Description As Following : A-566-4420 Friction Clutch, I-Type PN: 566-4420 Found in Section & Models : Driveline > Clutch, Weasler TORQMASTER: 44 SERIES Associated Items : New Also This is An Aftermarket Product And : Original Weasler part. Clutch Type: Double Clamp Size: 1-3/4" 20 Spline 13,276in.lbs.