Comparison : Item # 80B9F-1, No. 80 - 1" Pitch - Finished Bore Sprockets
Item # 80B9F-1B, No. 80 - 1" Pitch - Finished Bore Sprockets
Item # 80B9F-1C, No. 80 - 1" Pitch - Finished Bore Sprockets
Item # 80B9F-1D, No. 80 - 1" Pitch - Finished Bore Sprockets
Item # 80B10F-1, No. 80 - 1" Pitch - Finished Bore Sprockets