This mini utility knife is like a 5th gen remix of multiple others stemming from k-eye's keychain knife [which itself is a remix of multiple other models] with some improvements I've added for smoother sliding and better grip.
Put blade on slide, and slide that in to the body by pressing down on the lever to lock it in and out of place. Easy Peazy.
*Update - Most recently added the little grips on the sides and updated the profile (just not the pictures)
Disclaimer Stuff:
Please be careful when handling blades. Razor blades are sharp so there's risk of injury. I'm only providing the design, handling of item is your responsibility.