Apex Tool Group, the makers of Crescent wrenches, Lufkin measuring tapes and some Craftsman brand hand tools, is in final negotiations with Bain Capital, according to a report by Reuters and other media outlets. The private equity firm that was co-founded by U.S. presidential candidate Mitt Romney has reportedly offered more than $1.5 billion for Apex, which is a joint venture between Danaher Corp. and Cooper Industries.