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 40, Chain Overall Width 0.717 in, Roller Diameter 5/16 in, Tensile Strength 4, 290 lbf, Pitch 1/2 in, Number of Strands 1, Pin Contruction Riveted Pin, Pitch Type Single Pitch, Inside Width 0.313 in, Series Neptune, Working Load Limit 810 lb, Finish Coated, Heavy Series No, Includes (1) Connecting Link, Lubrication SAE 10 to SAE 50, Maximum Operating Temperature 302 Degrees F