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Robertson Drive Bit: #2, 3 inches

Robertson Drive Bit: #2, 3 inches

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Although the terms "square drive" and "Robertson drive" are often treated as the same, there is a big difference - Robertson drives and Robertson screws have a slight taper to the square recess and a square drive and screw does not.

Robertson drives were invented by Canadian Peter Robertson around 1906 and are very popular and common in Canada, but not so much elsewhere.   

The advantage of using a Robertson drive with a Robertson screw is that the screw will "cling" to the driver, allowing one handed driving and virtually eliminating slippage common with drives such as Phillips drives.

These #2 Robertson drive bits fit our Rob Cosman screws with their duo Quadrex heads perfectly.  While a #2 square drive will also work, it doesn't fit the screw head perfectly like a Robertson and will not give you the "cling" feature.

We highly recommend you use Robertson Drives with our Rob Cosman screws.

 


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    04/24/2020
    Anonymous
    United States United States
    Makes Phillips Obsolete

    Worked in a furniture store back in college. Square head screws were more the rule than the exception. I always liked them better than Phillips and wondered why in the world we were still using Phillips for anything!