Schtickle Narex Robertson Square Drive 3 Screwdriver R3 x 100mm

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Schtickle Narex Robertson Square Drive 3 Screwdriver R3 x 100mm


Brand new, unused - discontinuted

The Robertson square drive, popularised in recent years by pocket hole technology pioneers Kreg, was patented in 1909 by Canadian inventor Peter Robertson. The really clever part of his invention was that the square drive screw heads could be cold formed and were therefore much more economical to mass produce. Unfortunately, Robertson's first foray into licensing his invention didn't go well, and his subsequent reluctance to grant manufacturing licenses prevented it from becoming the worldwide standard it rightly should have been.

Narex wood line plus Robertson square drive screwdrivers have beautifully ground, slightly tapered tips. The tips are finished with a black high friction coating, that also serves as a substrate for the high quality chrome plating applied to the rest of the tool.

The handles of the Narex wood line plus range are made from beech wood, stained black, and are triangular in section giving optimal comfort and transmission of torque from the hand. The tang of the driver goes right through, so they can be lightly encouraged with a mallet or small hammer if necessary. The bolster is hexagonal so that a spanner can be used to provide additional leverage for intransigent screws.

To prevent damage to either the driver or the screw head, always use the correct size and shape of driver for the screw.

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