• Part / Model Number: 08B-2-40T
• Sprocket Type: Duplex (Double Strand) Roller Chain Sprocket
• Number of Teeth: 40T
• Chain Size Standard: ISO / BS / DIN 08B-2
• Chain Pitch: $1/2\text{ inch}$ ($12.7\text{ mm}$)
• Material: Medium Carbon Steel
• Drive Ratio: 2:1 reduction (when paired with the 20T sprocket)
• Features: Precision-machined hub, standard keyway and setscrew bore