The Mac Tools Oil Filter Swivel Wrench OF537A is a high-quality hand tool designed for removing and installing oil filters in vehicles. Manufactured by Mac Tools in the USA, this wrench is a single item and features a metric system of measurement. It is a reliable and durable tool that is essential for automotive maintenance and repair tasks. With the brand reputation of Mac Tools, you can trust that this oil filter wrench is a top choice for professionals and DIY mechanics alike.