Spring knife and circlip knife
First, a lower knife out of science, is the so-called "jump", the general use of friction locking, manufacturing technology content is relatively high, but a quick knife is not easy in use because of poor rude lock harming themselves situation. However, the domestic manufacture of sub class cutting tools technology is not yet mature, the production of sub types of cutting tools are more well-known manufacturers of the United States MOD, micro technology, and butterfly. Less expensive, about 3400 yuan, and good points are around 5 thousand. The next kind of tool has good puncture, that is to say, it is suitable for "poking"". If it's self-defense, it's not recommended
In comparison, jumping operation convenient, but the absolute control of the tool is to escalate, police found ironclad confiscated, but side jump can be disguised as a fruit knife to muddle through. In aspect of power, straight jump is larger than side jump, but it depends on personal use. As far as carrying, very convenient, after all, not just a pocket rocket, who can put it down.
Then Kahuang knife, is the so-called "jump" side, operation method is similar to ordinary knife, just use the blade and handle spring rotating automatic pop-up blade. This kind of tool generally use the "axis" lock the locking method, but this method is relatively "soft lock" in reliability and firmness of it. The old production side jump knife quality to a large extent can not be guaranteed. Sub class cutters are best known for the American Butterfly brand, which costs about 1500.
As for self-defense purposes, personally feel that unless a machete can deter people, if you encounter bad guys, you have a knife or frighten him, really to work you can not cut a knife, stabbed you have bad luck. And you saw straight jump jump side of the poor quality of domestic import price is too expensive, not to buy is more convenient, is the world's top seven hundred or eight hundred, the power is not small than the sword where to go, not control.
