BlackStar 100E19 - 100 Pitch QD Sprocket - 19 Tooth Type-E Flange Block The 5/C300 has a 7/8"

The 5/C300 has a 7/8" width

"mpn":"TB072053619805"

so a 2926V891 from any major manufacturer shares the same dimensions and runs on the same pulleys/sheaves

"text": "250-S8M-1160 has a 8 mm tooth pitch

BlackStar 100E19 - 100 Pitch QD Sprocket - 19 Tooth Type-E Flange Block The 5/C300 has a 7/8"The BlackStar 100E19 is a 100 pitch QD roller chain sprocket with 19 teeth, precision manufactured from SAE 1045 steel and features machine cut tooth profiles for smooth, reliable chain engagement. This sprocket requires a QD Type E Bushing (sold separately). Specifications Part Number 100E19 Chain Pitch 100 Number of Teeth 19 Maximum Bore 3 1 2" Bore Type QD Hub Style QD Bushing Required QD Type E Bushing Strand Count Single Material Steel Outside