Model A1225 / Early 2009 / 2.66, 2.93, or 3.06 GHz Core 2 Duo processor

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Are the TR10 and TR8 screwdrivers interchangeable with T10 and T8?

Hi!

Thank you for your great guide! I have a question regarding the Torx screwdriver sizes. I own a toolset that includes T6, T8, and T10 sizes as well as a few others. In your guide, it is listed that a "TR10" and a "TR8" screwdriver is needed. After watching several videos pertaining to hard drive replacement, many people claim that they are using the standard T10 and T8 sizes. Is there any difference between the "TR" labeled screwdrivers and the standard "T" ones? I don't want to have to buy these two screwdrivers if the ones I currently own will work. Please advise. Thank you!

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Here's a breakdown of the more common bits:

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The TR (Tamper Resistant) Trox screw has a pin in the middle of the hole so a standard Torx bit can't grab the screw.

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Thanks! Great diagram. I just put in an order for the TR Torx screwdrivers.

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The TR drivers might be able to work with standard Torx screws, but not visa versa. In about twenty years of working on Macs, I have never actually needed any of my TR drivers. None of the repair-guides I have found acutally calls for a TR driver - perhaps Sebastian has encountered a typo?

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