BlackStar H100BS13 1 3/16 K2S - 100 Pitch Finished Bore Sprocket - 13 Tooth - 1-3/16" Bore 3.7/8" 385L3 has 3 ribs

385L3 has 3 ribs

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and Jason Industrial 6/B144

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BlackStar H100BS13 1 3/16 K2S - 100 Pitch Finished Bore Sprocket - 13 Tooth - 1-3/16" Bore 3.7/8" 385L3 has 3 ribsThe BlackStar H100BS13 1 3 16 K2S is a 100 pitch Finished Bore roller chain sprocket with 13 teeth, precision manufactured from SAE 1045 steel with induction hardened teeth for extended wear life and features machine cut tooth profiles for smooth, reliable chain engagement. This sprocket has a 1 3 16" bore with keyway and set screws and is ready for immediate installation. Specifications Part Number H100BS13 1 3 16 K2S Chain Pitch 100 Number of Teeth