California Proposition 65: This product contains a chemical known to the State of California to cause birth defects or other reproductive harm. Leaf Chain, Chain Number BL634, Chain Overall Width 1.041 in, Lacing 3 x 4, Overall Length 10 ft, Pitch 3/4 in, Tensile Strength 21, 500 lb/in, Hole Diameter 0.314 in, Lubrication SAE 10 to SAE 50, Material Steel, Maximum Operating Temperature 300 Degrees F, Minimum Operating Temperature 15 Degrees F, Pin Outside Diameter 0.312 in, Plate Height 0.713 in, Plate Thickness 0.125 in, Standards ANSI