bionicus said:Those holders aren't really the perfect solution. In my experience, at least with Robertson heads, the bits will often enough pull out, remaining stuck in the screw once you've driven it into the wood.
Use this holder and the driver bits won't pull loose.
Personally, I use torx drive screws from Screw Products. Hell of a screw. Rarely is pre-drilling required. Especially if you lube with bees wax.