the arrow itself. You might have seen it listed
as the number after the model of arrow - 200,
250, 300, 340, 350, 400, 5575, and 7595 are some
of the more common designations. What does
that all mean though? Static spine is measured
by suspending an 880 gram (1.94 pound) weight
from the center of an arrow. The arrow must be
29 inches long and supported by two points of
contac ]\