1 Clutch Slider Disc (B3127R). Fits John Deere Tractor Models : 50, 520, 530. 3 Clutch Disc Adjusting Springs (B161R). 3 Clutch Pressure Plate Spring (Fits Belleville) Washer (Fits JDS1626). 1 Pulley Clutch Discs w/Bonded Lining (RE29878).