STEELMAN 06124 Self-Adjusting Oil Filter Wrench HEAVY DUTY - Made from heavy duty steel to stand up to long term, repeated use SELF-ADJUSTING - Self-adjusting cam style design grips tighter as you turn it SPECIFICATIONS - Fits filters sized 3 3/8-inch and 3 7/8-inch (86 to 98mm) DRIVE SIZE - Use with 3/8-inch drive ratchets, extensions, and torque wrenches or 7/8-inch end wrench PRECISION FIT - Designed to fit snugly over the end of filters and to easily remove them REACH CONFINED FILTERS - Snug fit and low profile lets you reach confined and hard-to-access filters easily that strap and chain style wrenches can't