Do you need a Alan wrench to tighten belts on car?

An Alan wrench, also known as a hex key or hex wrench, is not typically used to tighten belts on a car. Belts in cars are usually adjusted or tightened using specific tools such as a wrench or ratchet with the appropriate socket or open-end wrench. The type of tool required may vary depending on the make, model, and type of belt (such as serpentine belt or timing belt) of the specific car. Using an Alan wrench for this task is unlikely to be suitable or provide proper tension to the belts. It's best to refer to the owner's manual or seek guidance from a qualified mechanic when adjusting or tightening belts on a car.