BlackStar H80BS21 1 3/8 K2S - 80 Pitch Finished Bore Sprocket - 21 Tooth - 1-3/8" Bore BlackStar so the 16/B128 interchanges with

so the 16/B128 interchanges with Gates 16/B128

Prefer our Diesel Belting equivalent: 635-5M-25 Timing Belt 5mm Pitch

25T5/1400US ships from our Houston

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7/8" Bore Type 1

BlackStar H80BS21 1 3/8 K2S - 80 Pitch Finished Bore Sprocket - 21 Tooth - 1-3/8" Bore BlackStar so the 16/B128 interchanges withThe BlackStar H80BS21 1 3 8 K2S is a 80 pitch Finished Bore roller chain sprocket with 21 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 8" bore with keyway and set screws and is ready for immediate installation. Specifications Part Number H80BS21 1 3 8 K2S Chain Pitch 80 Number of Teeth 21 Bore