| 摘要 |
An automotive wheel nut has a frusto-conical periphery and in its outer end face has a pair of wrench receiving openings of different diameters and spaced angularly at oblique angles. A wrench member in the shape of a nut has a clearance hole to fit over the wheel stud which projects from the nut and has pins in its inner face so spaced and sized as to fit the openings in the nut. A conventional wrench is employed for manipulating the wrench member to tighten or loosen the wheel nut.
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