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Security Torx Star Tamper Proof Keys, Bits & Drivers

What sort of torx key/bit/driver do I need?

Standard Torx
A torx screw is similar to an allen/hex screw but instead of being hexagonal, it's a star shape. Any standard or tamperproof torx key, bit or driver will fit a standard torx screw.
Tamperproof Torx
A security tamper-proof torx screw is the same shape as a standard torx screw, but it has a security point/pole in the middle. You'll need a tamperproof torx key that has a hollow centre which will fit over the security pole.

What size torx key/bit/driver?

Torx sizes are shown in multiples of 0.1mm, so a size of T20 is 2.0mm. Ideally you should find out the spec of the screw you're trying to undo to be sure you have the correct size torx key. If you don't know the size, you can try and measure it, but the stars in the screws tend to be quite small and quite hard to measure.The size is the diameter measured from the inside points of the star. So a measurement of 1.5mm would need a T15 key.
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