This useful tool reaches between the gap on double doors to activate thumb-turn deadbolts. It also works on security grates and grilles. This tool is especially useful for first responders to avoid destructive entry on commercial doors.
Note: We try to lubricate all of these upon receipt but sometimes the lubricant dries and causes the tool to squeak, This is easily remedied with a spritz of WD-40 or Houdini.