A flexure includes a metal base and a wiring portion. The wiring portion is constituted of an insulating layer, a conductor group, and others. A tongue portion is formed to a main portion of the metal base. A slider including an attached electronic unit is disposed to the tongue portion. The conductor group includes conductors electrically connected to the slider and conductors electrically connected to the attached electronic unit. Island-shaped electrical circuit portions are formed on the metal base. The electrical circuit portions are electrically independent from the main portion of the metal base. The conductors for the attached electronic unit are electrically conductive with respect to the electrical circuit portions through conductor coupling portions piercing the insulating layer. The electrical circuit portions are connected to terminal portions of the attached electronic unit.