shuǎi gùn yīn wèi biàn yú xié dài, zài yì xiē ān bǎo gōng zuò zhōng yě hěn cháng yòng.

甩棍因为便于携带，在一些安保工作中也很常用。

Expandable batons are also commonly used in some security work because they are easy to carry.