There are some of us who are the multi-tool swiss knife pros, and there are some who don’t know a nail from a screw. 3Driver may look like a lot of multi-tools you’ve seen on Yanko, but it actually isn’t a multi-tool. It’s a single, very clever tool. Designed telescopically, the screw is made expressly for phillips head screws. Its magic lies in the fact that it can work with screws of all sizes, because of its tapering design. All you do is expand or contract the tool to make its head big or small, corresponding to the size of your screw. It’s simple and idiot-proof, really! Designer: Wanki Kim