GearWrench 2320D Heavy Duty Oil Filter Wrench 3-3/4” to 4-1/2” The GearWrench 2320D Heavy Duty Oil Filter Wrench 3-3/4” to 4-1/2” is designed for high torque requirements of truck filters and used with 1/2” square drive tools, and feature 1 1/2” wide bands for added strength and increased grip area. Caution do not use with power tools.