Attach brass valve arm to plastic valve arm with thumbscrew provided. Make sure serrations mesh properly.
用所提供的翼状螺丝将黄铜阀门臂附加到塑料阀门臂上。确保锯齿啮合适当。
One of a series of small ridges or grooves on the surface or edge of a metal object, such as a thumbscrew, to aid in gripping.
滚花：金属物体表面或边缘上的一系列小峰或凹槽，如指旋螺钉，使更容易握紧。
One of a series of small ridges or grooves on the surface or edge of a metal object, such as a thumbscrew, to aid in gripping.
滚花：金属物体表面或边缘上的一系列小峰或凹槽，如指旋螺钉，使更容易握紧。
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