BlackStar DS80A16H - Double-Single 80 Pitch A-Plate Sprocket - 16 Tooth J Section 1890-14M-85 has a 14 mm

1890-14M-85 has a 14 mm tooth pitch

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so a 1288-14M-85 from any major manufacturer shares the same dimensions and runs on the same pulleys/sheaves

The 25T5/900US is a timing belt from D&D Global's Dura-True Torque Urethane Steel - T5 Series line

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BlackStar DS80A16H - Double-Single 80 Pitch A-Plate Sprocket - 16 Tooth J Section 1890-14M-85 has a 14 mmThe BlackStar DS80A16H is a 80 pitch double single strand A Plate roller chain sprocket with 16 teeth, precision manufactured from SAE 1045 steel and features machine cut tooth profiles for smooth, reliable chain engagement. Specifications Part Number DS80A16H Chain Pitch 80 Number of Teeth 16 Bore Type Plain Bore Hub Style A Plate Strand Count Double Single Material Steel Outside Diameter 5. 63" Pitch Diameter 5. 126" Approx. Weight 9. 500 lbs Cross