Customized item.
(ii) Customized item. An item is not unique if the total allocable contract costs attributable to customizing activities that are incident to or necessary for the manufacture of the item do not exceed 10 percent of the estimated total allocable contract costs allocable to the item. In the case of a contract for multiple units of an item, this comparison must be performed on the first unit of the item, and the total allocable contract costs attributable to customizing activities that are incident to or necessary for the manufacture of the first unit of the item must be allocated to that first unit.