knurled thumb screws 中文意思是什麼
knurled thumb screws
解釋
滾花高頭螺釘-
Knurled thumb screws with waisted shank
滾花頭不脫出螺釘 -
Knurled thumb screws
滾花高頭螺釘 -
Knurled thin thumb screws
滾花扁型螺釘
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