Brooks' MT-10 Multi-Tool is handy for everyday use and to take along on rides. It has 10 essential tools that fold into the handle. They include a regular and Phillips scewdriver, a Torx T25, and 2, 2.5, 3, 4, 5, 6 and 8mm Allen wrenches. And since it wouldn't be a Brooks product without an extra touch of elegance, it comes complete with its own embossed-leather protective sleeve.
Brooks Heritage, Part I
Brooks Heritage, Part II