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The four bits—two slotted and two Phillips—are on two double-sided bits that sit on each end of a removable stem. It’s an easy screwdriver to use, and we’ve found that it’s enough to ...
The Canadian Model T Ford used over 700 Roberson screws. A Phillips driver, although those screws look suspiciously like Robertsons. Ford found that the Robertson drive saved a few bucks on the ...