Pulley for RIDER blade shaft Characteristics : A: Outer diameter 185mm B: Throat inner diameter 149mm C: Throat height 17mm D: Hole diameter 15.9mm E: Hole type "Millerighe" Throat type "V" Code: 455333 Original part number reference: 532416877, 525568001 532 41 68-77 , 525 56 80-01 HUSQVARNA, AYP, PARTNER etc.