Reversible oil wrench designed to remove and install oil filters quickly and easily, with a 3/8"D for use with a ratchet, power or extension bar. Durable steel construction with a spring- loaded tension mechanism that adjusts to fit filters from 66 – 94mm and curved profile steel jaws that grip without slipping. Adjustment range: 66 - 94mm.Steel jaws shaped to grip the filter without slipping. 3/8" square drive for use with a ratchet, power or extension bar. Two-way, reversible design can remove & install filters.