All have a reversible thumb knob for one-hand easy opening and spring-loaded lock for closing.

逆向拇指把柄，一只手就可以将其轻松打开或闭合。

youdao

All have a reversible thumb knob for one-hand easy opening and spring-loaded lock for closing.

逆向拇指把柄，一只手就可以将其轻松打开或闭合。

youdao