Function: This oil filter wrench is a perfect fit to remove spin-on filters and filter housings. But just for removal, not for installation. Not for use on chrome plated oil filters or cartridge style filters where you have to remove a plastic or metal cap to expose the filter element. Function: This oil filter wrench is a perfect fit to remove spin-on filters and filter housings. But just for removal, not for installation. Not for use on chrome plated oil filters or cartridge style filters where you have to remove a plastic or metal cap to expose the filter element. Function: This oil filter wrench is a perfect fit to remove spin-on filters and filter housings. But just for removal, not for installation. Not for use on chrome plated oil filters or cartridge style filters where you have to remove a plastic or metal cap to expose the filter element. Function: This oil filter wrench is a perfect fit to remove spin-on filters and filter housings. But just for removal, not for installation. Not for use on chrome plated oil filters or cartridge style filters where you have to remove a plastic or metal cap to expose the filter element. Function: This oil filter wrench is a perfect fit to remove spin-on filters and filter housings. But just for removal, not for installation. Not for use on chrome plated oil filters or cartridge style filters where you have to remove a plastic or metal cap to expose the filter element.