Comparison : Item # 41A15, No. 41 - 1/2" Pitch - Stock Bore Sprockets
Item # 41A16, No. 41 - 1/2" Pitch - Stock Bore Sprockets
Item # 41A17, No. 41 - 1/2" Pitch - Stock Bore Sprockets
Item # 41A18, No. 41 - 1/2" Pitch - Stock Bore Sprockets
Item # 41A19, No. 41 - 1/2" Pitch - Stock Bore Sprockets