An oil filter wrench is a tool used to remove and install oil filters. It is typically a metal band with a handle that is attached to the oil filter. The wrench is then turned to loosen or tighten the filter.
Oil filter wrenches are important because they allow you to safely and easily remove and install oil filters. Without a wrench, it can be difficult to get a good grip on the filter, which can lead to spills and damage. Oil filter wrenches also help to prevent you from overtightening the filter, which can damage the filter and the engine.