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https://iowacitytechnologyservices.com/2014/02/28/tools-required-to-open-an-apple-macbook-pro-and-upgrade-the-hard-drive-phillips-ph0x40-and-torx-t6x40-drivers/
Tools Required to Open an Apple MacBook Pro and Upgrade the Hard Drive: Phillips PH0X40 and Torx T6X40 Drivers