POZI Impact Driver Bits – PZ – Double Ended – No.2 x 65 (2 pcs)

If you have ever snapped a cheap bit mid-job and sent a screw sideways into a door frame, you will appreciate what goes into a properly engineered impact driver bit. These 65mm PZ2 double ended impact driver bits are built specifically for use with impact drivers, not just tolerant of them. The steel composition and heat treatment process have been developed to handle the sudden rotational and downward forces that impact driving generates, which is exactly the kind of stress that turns a standard bit into a small piece of scrap metal at the worst possible moment.

The torsion zone is the key feature here. Rather than the entire bit being hardened to maximum rigidity, there is a deliberately engineered flex point along the body. This absorbs peak shock loads before they travel through to the tip. The result is a bit that flexes under load rather than fracturing. Hardness is reduced at the body while the tip retains the geometry needed to engage a Pozi drive cleanly, which matters more than people realise on a long run of screws.

Why the Double Ended Design Works on Site

The double ended format is straightforward enough: one bit worn or damaged, flip it and carry on. For high-volume work, decking, boarding out, fixing batten, the ability to get a second working tip from the same piece without digging through a bit set is a genuine time saver. At this price per pack, keeping a handful in your tool belt is not a stretch.

The black phosphate finish is applied for corrosion resistance, which helps on outdoor jobs or anywhere moisture is present. It also reduces surface friction slightly, which makes a small but noticeable difference when driving into timber for extended periods.

Heat Treatment and Longevity

The heat treatment process used on these bits is designed for longevity under repeated impact cycling. Each time an impact driver fires, the bit takes a rotational hit. A bit that has not been treated correctly will fatigue quickly, you will see it in the rounding of the tip profile. These are made to maintain their shape over a realistic working life, not just the first twenty screws.

Compatible with all standard quarter inch hex impact drivers and quick-release holders. The 65mm length gives useful reach in tight areas without the wobble you sometimes get with longer bits. A sensible length for most site applications.