BlackStar H100R32 - 100 Pitch R Sprocket - 32 Tooth D&D Global com/products/d-and-d-345l12-v-belt"

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The SPB2350 has a 16

so a 250K12 from any major manufacturer shares the same dimensions and runs on the same pulleys/sheaves

BlackStar H100R32 - 100 Pitch R Sprocket - 32 Tooth D&D Global com/products/d-and-d-345l12-v-belt"The BlackStar H100R32 is a 100 pitch R roller chain sprocket with 32 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. Specifications Part Number H100R32 Chain Pitch 100 Number of Teeth 32 Bore Type Plain Bore Hub Style R Strand Count Single Material Steel Hardened Teeth Yes Outside Diameter 13. 44" Pitch Diameter 12.