BlackStar H60BS50 1 5/8 K2S - 60 Pitch Finished Bore Sprocket - 50 Tooth - 1-5/8" Bore Thrust Bearing The 6/8V1250 has a 1"

The 6/8V1250 has a 1" width

The PIX XPZ2690 Industrial V-Belt is a cogged V-belt featuring Cogged metric XPZ (10mm) dimensions

"text": "The 11/C128 has a 7/8\" width

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BlackStar H60BS50 1 5/8 K2S - 60 Pitch Finished Bore Sprocket - 50 Tooth - 1-5/8" Bore Thrust Bearing The 6/8V1250 has a 1"The BlackStar H60BS50 1 5 8 K2S is a 60 pitch Finished Bore roller chain sprocket with 50 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 5 8" bore with keyway and set screws and is ready for immediate installation. Specifications Part Number H60BS50 1 5 8 K2S Chain Pitch 60 Number of Teeth 50 Bore