Function: Cut the old oil filter housing and check the inside to find out the problem with the oil filter.Cutting Range: Qagea oil filter cutter has a filter cutting range of 2-3/8" - 5"Easy to use: The handle is designed with twill handle, which is easy to operate.Quality: The Oil Filter Cutter is made by an ISO certified manufacturer, steel (blade) + anodized with high quality aluminum.