| 摘要 |
PURPOSE: A plunger is provided to prevent a compression part coupled to a piston built in a cylinder from being separated, when opening choking of a sewer or a toilet bowl. CONSTITUTION: The plunger contains: a knob(13) installed to one side of the piston(10) built in the cylinder, a supporter(11) provided with a hanging projection(12) and widened to both ways, the compression part(20) provided with a retreated part(21) having a hanging groove(22) to interpose the supporter(11) to hang up a hanging projection, and a support projection(23) formed to the inside of the retreated part(21) to fix the opened part of the support(11).
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