California Proposition 65: This product contains a chemical known to the State of California to cause birth defects or other reproductive harm. Roller Chain, Chain Construction Riveted Pin, Overall Length 10 ft, Material Steel, Chain Number 12B, Chain Overall Width 0.953 in, Roller Diameter 15/32 in, Tensile Strength 7, 500 lbf, Pitch 3/4 in, Application Centrifugal Blowers, Number of Strands 1, Pin Contruction Riveted Pin, Inside Width 0.46 in, Series British Standard, Working Load Limit 1, 387 lb, Heavy Series No, Includes (1) Connecting Link, Lubrication SAE 10 to SAE 50, Maximum Operating Temperature 300 Degrees F