BlackStar D50B42 - Double Strand 50 Pitch B-Hub Sprocket - 42 Tooth D 1760M20 has 20 ribs and

1760M20 has 20 ribs and a 176 in (Pitch Length)

2/B355 is a standardized industry size

so the 4/3VX425 interchanges with Gates 4/3VX425

"name": "Is 10/B95 interchangeable with Gates 10/B95

"mpn":"TB072053277654"

BlackStar D50B42 - Double Strand 50 Pitch B-Hub Sprocket - 42 Tooth D 1760M20 has 20 ribs andThe BlackStar D50B42 is a 50 pitch double strand B Hub roller chain sprocket with 42 teeth, precision manufactured from SAE 1045 steel and features machine cut tooth profiles for smooth, reliable chain engagement. Specifications Part Number D50B42 Chain Pitch 50 Number of Teeth 42 Minimum Bore 1 3 16" Maximum Bore 2 3 4" Bore Type Plain Bore Hub Style B Hub Strand Count Double Material Steel Outside Diameter 8. 72" Pitch Diameter 8. 364" Approx.