Specifications: · Three Jaws Design Make Work Easier. · The Oil Filter Wrench Can be Adjust to remove Filters from 2-1/2 inch to 4.5 inch. · Fits 1/2 and 3/8 inch Square Drive Ratchet or 7/8 inch wrench in all kinds of vehicles. · The oil Filter wrench is Made of 45# Carbon Steel. Never Rusty. · Two Upper And Lower Thickening plate, Firmly Holding the Gears, Long and Durable.