This pulley wrench set has a long curved handle for easy operation and is equipped with 13 interchangeable adapters, suitable for almost all types of vehicles. Widely applicable, easy to disassemble, and . This tool is used to remove and install belts on a serpentine belt system using a spring-loaded idler. Choose the appropriate sleeve size and positioning tool idler arm (handle only suitable for 16mm applications) to pull or pull to release tension. The locking nuts and component mounting bolts on the tensioning, timing, or auxiliary pulleys may be difficult to access. Usually hidden in the engine compartment, behind the components, usually near the radiator or other obstacles. Scope of use:Idler belt screws are used for installation, disassembly, and in narrow spaces inside the engine compartment. The screws are usually hidden behind the accessories in the engine compartment and are equipped with an arc-shaped wrench that can bypass obstacles to tighten the screws., Manufacturer: Akfldms