膨胀螺丝 Wall plug
（重定向自Screw anchor）
壁塞又称壁虎，是一种装修工具，用来安装在墙上，以安放螺丝。在塑胶普及以前，壁塞一般采用麻根制作，因为麻根比木坚靱，所以又称为麻根塞；亦因此有装修师傅把现时胶制的壁塞称之为胶塞。事实上，假若墙身够厚够坚实的话，可以直接在墙身钻孔，让螺丝直接从墙身借力，要不，就要借助壁塞来加强固定螺丝。
Screw anchor
中文百科
英语百科
Wall plug 膨胀螺丝
（重定向自Screw anchor）
A wall plug (UK English) or screw anchor (US English), commonly called a "rawl plug" or dowel in British or US English respectively, is a fiber or plastic (originally wood) dowel used to enable the attachment of a screw in material that is porous or brittle or that would otherwise not support the weight of the object attached with the screw. It is a type of fastener that for example allows screws to be fitted into masonry walls.
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