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so a 3/SPC4250 from any major manufacturer shares the same cross-section and length and runs on the same sheaves
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BlackStar H60B21 90MM - 60 Pitch B-Hub Sprocket - 21 Tooth 22mm so a 3/SPC4250 from anyThe BlackStar H60B21 90MM is a 60 pitch B Hub 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 90MM" bore and is ready for immediate installation. Specifications Part Number H60B21 90MM Chain Pitch 60 Number of Teeth 21 Bore Size 90MM" Minimum Bore 3 4" Maximum Bore 2 3
US$ 119.65
US$ 132.41
US$ 197.78
