BlackStar 80BS57 1 3/8 K2S - 80 Pitch Finished Bore Sprocket - 57 Tooth - 1-3/8" Bore 4.15/16" com/s/files/1/0666/7721/products/MultiSpeed_Variable_Speed_f05f6275-fb16-48c9-ab39-15e296a36b53

com/s/files/1/0666/7721/products/MultiSpeed_Variable_Speed_f05f6275-fb16-48c9-ab39-15e296a36b53

"sku":"TB072053479812"

v=1630680548"

The 1200-8M-20 is a timing belt from D&D Global's Dura-Sync Torque - 8M Series line

Is 11/B71 interchangeable with Gates 11/B71

BlackStar 80BS57 1 3/8 K2S - 80 Pitch Finished Bore Sprocket - 57 Tooth - 1-3/8" Bore 4.15/16" com/s/files/1/0666/7721/products/MultiSpeed_Variable_Speed_f05f6275-fb16-48c9-ab39-15e296a36b53The BlackStar 80BS57 1 3 8 K2S is a 80 pitch Finished Bore roller chain sprocket with 57 teeth, precision manufactured from SAE 1045 steel and features machine cut tooth profiles for smooth, reliable chain engagement. This sprocket has a 1 3 8" bore with keyway and set screws and is ready for immediate installation. Specifications Part Number 80BS57 1 3 8 K2S Chain Pitch 80 Number of Teeth 57 Bore Size 1 3 8" Minimum Bore 1 3 8" Maximum Bore 2 15 16"