DescriptionWide Application Range, Convenient Disassembly, Durable and Durable. This tool is used to remove and install belts on serpentine belt systems using spring loaded idlers. Select the appropriate sleeve size and positioning tool idler arm (handle only applicable for 16mm applications) to pull or pull to release tension.Lock nuts and component mounting bolts on tensioning, timing or auxiliary pulleys can be difficult to get access to. Often hidden down in the engine bay, behind the component and usually close to the radiator or other obstacles.This pulley wrench set has a long curved handle to make access easy and comes with 13 interchangeable adaptors suitable for almost all types of vehicles.Specifications:Name: Car engine belt adjustment wrench setSpecifications: 15-piece setE type specification (5 pieces): E10/E12/E14/E16/E18Plum socket (8 pieces): 12mm/13mm/14mm/15mm/16mm/17mm/18mm/19mm Package includes:15-piece* Idler Pulley Adjustment Wrench Return Policy All of our items come with a 30-day free return policy. If you need to return, please contact us, let us know the detailed problem and send us some pictures for confirmation. We reserve the right to refuse any returns for objective reasons. Shipping Policy All of our items are shipped free with tracking numbers. Orders will be shipped within 3 working days upon receipt of payment. Most orders will be shipped within 1 working day. In most cases, shipping takes 8-12 working days.