Photo 1 of #40 Hardened Roller Sprocket B-Type, Single Strand 1/2" Pitch, Hole Dia 5/8", 9 Tooth,Blackened Treatment, with Fixed Set Screws.

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Photo 1 of #40 Hardened Roller Sprocket B-Type, Single Strand 1/2" Pitch, Hole Dia 5/8", 9 Tooth,Blackened Treatment, with Fixed Set Screws.Photo 2 of #40 Hardened Roller Sprocket B-Type, Single Strand 1/2" Pitch, Hole Dia 5/8", 9 Tooth,Blackened Treatment, with Fixed Set Screws.