BlackStar DS80A15H 2 K2S - Double-Single 80 Pitch A-Plate Sprocket - 15 Tooth - 2" BoreThe BlackStar DS80A15H 2 K2S is a 80 pitch double single strand A Plate roller chain sprocket with 15 teeth, precision manufactured from SAE 1045 steel and features machine cut tooth profiles for smooth, reliable chain engagement. This sprocket has a 2" bore and is ready for immediate installation. Specifications Part Number DS80A15H 2 K2S Chain Pitch 80 Number of Teeth 15 Bore Size 2" Bore Type Plain Bore Hub Style A Plate Strand Count Double Single