Quadrex (SPAX)
The Phillips/square screw drive, also known as the Quadrex or SPAX screw drive, is a combination of the Phillips and Robertson screw drives. While a standard Phillips or Robertson tool can be used, there is a dedicated tool for it that increases the surface area between the tool and the fastener so it can handle more torque.

For a complete range of screwdriver bit tooling products please contact us at hello@threadrive.co.uk or call on 01268 288880.

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