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, Sidebow Curved, Overall Length 10 ft, Material Steel, Chain Number 40, Chain Overall Width 0.717 in, Roller Diameter 5/16 in, Tensile Strength 3, 480 lbf, Pitch 1/2 in, Number of Strands 1, Pin Contruction Riveted Pin, Inside Width 0.313 in, Series Curved Riveted, Working Load Limit 420 lb