Turn Torx screws even when you can't access them head on. A ball tip with six wide lobes engages the drive at an angle without slipping. These bits are handy for reaching screws in corners and underneath machinery.
Quick-Change Hex Shank—Lock these bits directly into power tools. They won't wobble as much as bits paired with an adapter, so they are the best choice for high-precision tasks.
Steel—Best for dry environments, since moisture will cause these bits to rust.