This is a A-523551M1 Plate, Steel PTO PN: 523551M1Main Description As Following : A-523551M1 Plate, Steel PTO P.N: 523551M1 Dim A (1): 11 TabsDim B (2): 3.720" I.D.Dim C (3): 5.660" O.D.Dim D (4): .088" Thick Crossed From: M523551 , Found in Section & Models : PTO Parts > PTO and Related Parts, Massey Ferguson TRACTOR: 1100, Massey Ferguson TRACTOR: 1105, Massey Ferguson TRACTOR: 1130, Massey Ferguson TRACTOR: 1135, Massey Ferguson TRACTOR: 1150, Massey Ferguson TRACTOR: 1155, Massey Ferguson TRACTOR: 1500, Massey Ferguson TRACTOR: 1505, Massey Ferguson TRACTOR: 1800, Massey Ferguson TRACTOR: 1805, Transmission & Rear Axle > Clutch Plates: Clutch and PTO, Massey Ferguson TRACTOR: 1100, Massey Ferguson TRACTOR: 1105, Massey Ferguson TRACTOR: 1130, Massey Ferguson TRACTOR: 1135, Massey Ferguson TRACTOR: 1150, Massey Ferguson TRACTOR: 1155, Massey Ferguson TRACTOR: 1500, Massey Ferguson TRACTOR: 1505, Massey Ferguson TRACTOR: 1800, Massey Ferguson TRACTOR: 1805 Associated Items : New Also A-FRM-MH, A-MH-O-MF110030, A-MH-P-MF1100-30, A-MH-S-MF110030, A-SMMF201, A-MH-O-MF1105ETC, A-MH-P-MF1105, A-MH-S-MF1105ETC, A-SMMF201, A-FRM-MH, A-MH-O-MF110030, A-MH-P-MF1100-30, A-MH-S-MF110030, A-SMMF201, A-MH-O-MF1105ETC, A-MH-P-MF1105, A-MH-S-MF1105ETC, A-SMMF201, A-MH-O-MF1150, A-MH-P-MF1150 And : Dim A (1): 11 Tabs Dim B (2): 3.720" I.D. Dim C (3): 5.660" O.D. Dim D (4): .088" Thick