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活動鉗口采用 45# 鋼鍛造，結合加強型彈簧開合設計，兩鉗口齒部均高頻 淬火，硬度 47-53HRC；頭部可作 90 度角活動，適合不同角度的狹小空 間作業(yè)。
The head of pliers drop forged with 45# steel, fully heat treatment, up and down pliers tooth high-frequency quenching, with hardness of 45-48HRC, drop head combined with reinforced spring opening-closing design, the head of pliers can make 90 degree angle activities, suitable for different angles of the narrow space operations
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