Skip the struggle and hassle when working with dual wheels with outer and inner nuts. Just use this wrench with its lip against the rim and your square drive on the stud to split them apart. Wrenches hold outer cap nut on dual wheels while the inner nut is turned. Designed with a lip that securely holds the wrench in place so it won’t rotate when the inner nut is turned. Wrench Size: 1-1/2-Inches