| 摘要 |
A wrench for engaging the retaining nut on the air valve stem associated with the inside wheel of a vehicular dual wheel set, comprising, an elongated hollow socket adapted to receive the air valve housing stem, said socket having a closed proximal end and an open distal end and having side walls with inside and outside surfaces, where the inside surfaces of the side walls define the interior shape of at least a portion of the hollow socket as an equilateral polygon, an elongated rigid shaft coaxially attached to the proximal end of the socket and a handle integrally attached to the shaft for rotating the socket.
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