1: The chain pitch is .404" 2: The thickness of the transmission chain flake is .063" 3: The .404"saw chain tooth is square 1:Professional, Reliable, High quality .404"Saw Chain 2:Square and round chisel can be selected 3:Made of import Nickel Alloy Steel and the static breaking pull stand in the high point 4: Used in the cutting lumber and forest hag5. nice performance .404" chain