Info:Martin 08B23 Type B Single Strand Solid Stock Bore Roller Chain Sprocket, 12 to 55 mm Dia Bore, 100.634 mm OD, #08B-1 Chain, 23 Teeth, 12.7 mm Pitch, Steel
Info:Martin 08B27 Type B Single Strand Solid Stock Bore Roller Chain Sprocket, 16 to 55 mm Dia Bore, 116.761 mm OD, #08B-1 Chain, 27 Teeth, 12.7 mm Pitch, Steel
Info:Martin 08B28 Type B Single Strand Solid Stock Bore Roller Chain Sprocket, 16 to 55 mm Dia Bore, 120.795 mm OD, #08B-1 Chain, 28 Teeth, 12.7 mm Pitch, Steel
Info:Martin 08B29 Type B Single Strand Solid Stock Bore Roller Chain Sprocket, 16 to 55 mm Dia Bore, 124.829 mm OD, #08B-1 Chain, 29 Teeth, 12.7 mm Pitch, Steel