Model QW50A Air Operated Slips is a wellhead tools. Mainly used to clipping tubing and drilling rod which raise or put down at well repairing service operation.

QW50A气动卡瓦是油田修井作业时，安装在井口上用于卡紧油管及类似管柱的一种工具。

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He is in surgery, raising his hands in the air as a nurse slips a pair of latex gloves over them.

NEWYORKER: The TV

Among the major carriers, only Delta Air Lines has not yet handed out pink slips, although it is expected to announce layoffs in the coming week.

CNN: Airlines reeling, laying off thousands