Specified debentures for income tax deduction: IDBI Flexibands bonds listed by distinctive ranges and form. The Central Government, invoking clause (ii) of subsection (1) of section 80L of the Income tax Act, specifies particular IDBI Flexibands 15th series bonds-Regular Income Bond, Growing Interest Bond, and Infrastructure (Tax Saving) Bond-by distinctive number ranges and by physical or dematerialised form, for the purposes of that clause.