Fully color-coated for quick identification. Each key’s color corresponds to a specific drive size, so you can grab the key you need and get cranking. These L-keys are precision manufactured to tight tolerances. A ball tip on the long leg engages the drive with less contact than a straight tip to turn screws at an angle instead of head on. Ball tips are handy for corners and tightly packed areas, however, they don’t grip as tightly as straight tips and may strip the drive of the fastener if you crank them too hard.