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This specification covers preformed cranioplasty plates that allow alteration of dimensions to fit a particular skull defect. Cranioplasty plates shall be manufactured from unalloyed titanium, wrought cobalt-20chromium-15tungsten-10nickel alloy, or wrought titanium-6aluminum-4vanadium extra low interstitial alloy with multiple perforations and in various dimensions, with the thickness and shape varying with need. The shape, in particular, may be altered by the neurosurgeon such as to contour it to conform to the normal configuration and symmetry of the skull at various defect sites. Should the plates require metallic sutures or screws as fasteners, they shall be of the same metallic composition as the cranioplasty plates.