This is a NO2 x 50mm Pozi hex screwdriver bit from Curtis Holt, a PZ2 Pozidriv driver insert designed for fastening Pozidriv screws in powered and manual applications. Its primary use is to transfer torque from a power tool or bit holder to Pozidriv screw heads where controlled drive and reduced cam‑out are required, for example when assembling cabinetry, fixing electrical accessories or installing plasterboard and fittings.

The bit is manufactured from S2 tool steel and heat treated to provide high torsional strength and resistance to wear; typical hardness is in the 55–62 HRC range. The shaft carries a 1/4in (6.35mm) hex shank to suit standard quick‑change bit holders and impact driver chucks. The working end is a Pozidriv PZ2 profile, produced to the recognised Pozidriv geometry and compatible with industry DIN/ISO/BS Pozidriv specifications. The surface has a black phosphate (or black oxide) finish to give basic corrosion protection and improved lubrication during use. As a driver bit, there is no thread; head type is Pozi and drive type is 1/4in hex shank for power tool use.

This driver bit is commonly used across trades and industries including joinery, furniture manufacture, electrical installation, plumbing, HVAC maintenance, construction and general industrial assembly. It performs well in repetitive fastening tasks where a powered driver or impact driver is used and in confined spaces where the 50mm length gives a balance between reach and control.

Key benefits of the Curtis Holt PZ2 50mm bit include the S2 steel strength for high torque and reduced breakage under load, the Pozidriv profile which reduces slippage compared with Phillips, and the 1/4in hex shank compatibility with a wide range of drivers and quick‑change holders. The black phosphate finish helps resist rust in typical workshop and site environments and extends usable life compared with untreated bits.

Duchy Fasteners stocks this Curtis Holt PZ2 bit in single units and trade packs, and carries a wider range of Pozidriv sizes (PZ1–PZ3) and lengths (25–75mm) to suit different applications. Please contact us for availability and pack options.