ZOMAX chainsaw clutch bell pinion Bell: 68.00 mm Shank: 15.00 mm HEIGHT: 26.20 mm Pitch: .325 Number of teeth: 7 for models: ZM4610 ZM4680 ZM5200 ZM5410 Code: 018977 ZOMAX MOTORWHEEL PROGREEN PG 5020 .325" TEETH 7 SPROCKET 68.00 TOOTH 15.00 ATTACHMENT HEIGHT 26.20 RING BM 001838 SR