Swivoil ™ Filter Wrench Wrenches are made of high-quality steel with a zinc-plated yoke and a blackened band for resistance to rust and corrosion. The Plastisol-dipped handle will not slide off during use. Even hard-to-reach oil filters will come off easily with this swivel-handle oil filter wrench. The unique yoke and link assembly allows a good grip but will not crush the filter. Wrenches’ swivel tension is adjusted easily by using the nut and bolt on the handle. Diameter Range - 3-7/8 to 4-3/8 (96mm to 111mm)