Meshing teeth pairs of involute spur gears often form the final drive of high-performance motorsport transmissions. They are subject to high normal and shear loading. Under transient conditions pertaining to a meshing cycle. the contact conditions alter from the onset of teeth pair engagement through to maximum normal loading. https://www.chiggate.com/color-charm-12n-1200-high-lift-blonde-1-4oz-online-now/