Ensure your semi truck is Ready for the Road Ahead with well-maintained spring brakes, with the Power Products 2.5" Spring Brake Caging Bolt Release Tool. By applying force directly to a caging bolt, this replacement device allows the bolt to disengage from the locked position, helping prevent the accidental release of the brake springs. Built with high-quality materials for superior durability. FleetPride is your First Click in Heavy Duty .