Chennai, May 29 : Over 10 lakh bankers in the government and private sectors are gearing up for a two-day strike starting on May 30, as the Indian Banks' Association (IBA) did not make any improved offer over the two per cent wage hike made earlier, an All India Bank Employees Association (AIBEA) leader said. The strike is spearheaded by the United Forum of Bank Unions (UFBU), an umbrella body of nine unions.