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Side view of square head bolt with adjustable thread length.
螺纹长度可调整的平头一字槽螺钉的侧面图。
youdao
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Aluminum alloy shaft and plastic head, shaft length could be adjustable.
铝合金杆身，头部为塑料杯。杆身可伸缩。
youdao
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Aluminum alloy shaft and plastic head, shaft length could be adjustable.
铝合金杆身，头部为塑料杯。杆身可伸缩。
youdao