Yet Another Utility Knife

I love utility knives and always have one with me while I work. I printed many of them found online but they always had characteristics that were not perfect for my use so I designed one, taking inspiration from the models tested, which could be small and pocket-sized but robust, with a blade locking system that prevented opening unwanted and with a locking system, once opened, robust enough to use it without risk but at the same time quick to unlock when placed in the pocket.
The pieces are quick and easy to print and the knurls to improve grip have been made so as not to create bridges that are too long. No supports of any kind are necessary.