Comparison : Item # 180A11, No. 180 - 2 1/4" Pitch - Plain Bore Sprockets
Item # 180A12, No. 180 - 2 1/4" Pitch - Plain Bore Sprockets
Item # 180A13, No. 180 - 2 1/4" Pitch - Plain Bore Sprockets
Item # 180A14, No. 180 - 2 1/4" Pitch - Plain Bore Sprockets
Item # 180A15, No. 180 - 2 1/4" Pitch - Plain Bore Sprockets