Dim A (1) 8.345" OD Dim B (2) 1.876" IDJohn Deere COMBINE: 6600 John Deere COMBINE: 6602 John Deere COMBINE: 6620 John Deere COMBINE: 6622 John Deere COMBINE: 7700 John Deere COMBINE: 7720 John Deere INDUSTRIAL/CONSTRUCTION: 690B John Deere TRACTOR: 4040 John Deere TRACTOR: 4230 (DIESEL) John Deere TRACTOR: 4240 John Deere TRACTOR: 4240S John Deere TRACTOR: 4320 John Deere TRACTOR: 4350 John Deere TRACTOR: 4430 John Deere TRACTOR: 4440 John Deere TRACTOR: 4455 (Europe W/ Eng. 6466 & 6076)