The key to success with a socket wrench is pattern matching: The socket must match the nut.
成功使用套筒扳手的关键在于模式匹配：套筒扳手必须与螺母相匹配。
2
Otherwise, you might feel as if you are using a socket wrench as a hammer hitting the handle of a screw driver to loosen a nut and bolt.
否则，您可能感觉到像用锤子一样使用一个套筒扳手来敲击螺丝刀手柄而拧开螺栓的螺母。
3
Unscrew the nut that connects the drain to the flange using an adjustable wrench if you are replacing the pop-up drain. Then remove the drain flange from the T-connector.