Goplus&reg; 30PCS Auto Oil Filter Wrench Socket Removal Tool Set Cap Type, For Mercedes Benz, Audi, VW, Porsche, Mazda, Volkswagen and MoreW/case Extremely tight causing tremendous pressure to be put on the wrench. Our oil filter wrenches are forged from high quality carbon steel so they won't crack like cheaper cast aluminum or flex and damage the plastic cap like stamped steel versions Adapter allows use with 3/8" or 1/2"Sq drive wrenches The surface is treated with a high quality black anodized finish to prevent corrosion Extensive set designed for a wide range of vehicles Packed with a strong carry-case, convinient for travel and storage