In {HEAD ~ operation} the working part bends to help distribute recoil foces evenly over the area of the face of the working part and the struts deflections decrease the angles, increasing the mechanical advantage of the struts in stretching {TAIL ~ the working piece}, thus giving the pad a fairly load/deflection characteristic 
In { HEAD ~ operation } the working part bends to help distribute recoil foces evenly over the area of the face of the working part and the struts deflections decrease the angles , increasing the mechanical advantage of the struts in stretching { TAIL ~ the working piece } , thus giving the pad a fairly load / deflection characteristic
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