Screwdriver bit set Bosch PZ3 extra hard — 100 pcs, 25 mm, 1/4" hex shank

Bosch extra hard screwdriver bit set with 100 Pozidriv PZ3 tips offers a compact supply of high-hardness bits for repeated screwdriving tasks. Each bit measures 25 mm in length and features a 1/4" hexagonal shank compatible with most bit holders and impact drivers. The set is supplied in a transparent polybag for easy storage and transport and is designed for applications where enhanced wear resistance and strength are required. The bits include a tapered torsion zone intended to absorb torque peaks and reduce breakage under demanding use.

Advantages

The extra-hard material increases resistance to wear and prolongs service life compared with standard bits, while the Pozidriv PZ3 geometry ensures secure engagement with compatible screws to reduce cam-out. The 25 mm working length provides good access in confined spaces, and the 1/4" hex shank offers broad compatibility with common bit holders, quick-change systems and impact drivers. Supplied as a 100-piece bundle, the set supports repetitive tasks and reduces the need to replace bits frequently.

Suitable for (tasks / use cases)

• Screwdriving in furniture assembly and flat-pack installations
• Interior finishing work where PZ3 screws are used
• Maintenance and repair tasks requiring a large number of similar bits
• Use with manual bit holders, cordless screwdrivers and impact drivers

When it may not be suitable

This PZ3 extra-hard bit set is intended specifically for Pozidriv PZ3 screw heads; it is not suitable for Phillips, Torx, slotted or other screw profiles. The extra-hard material improves wear resistance but can be less forgiving under excessive bending loads compared with more ductile bit types. For specialist applications requiring anti-spark, non-magnetic or corrosion-resistant materials, this standard steel construction may not meet requirements.

Key specifications

• Tip type: Pozidriv PZ3
• Quantity: 100 pieces
• Bit length: 25 mm
• Shank: 1/4" (6.35 mm) hexagonal
• Material: extra-hard steel with tapered torsion zone for torque absorption
• Packaging: polybag for storage and transport

How to use

Select a PZ3 bit from the set and insert the 1/4" hex shank into a compatible bit holder, quick-change chuck or impact driver. Ensure the bit is seated securely before applying torque. Use appropriate screwdrivers or drivers with speed and torque settings matched to the fastener and substrate to avoid over-tightening. Replace worn or damaged bits to maintain secure engagement and reduce the risk of damage to screw heads.

What to consider before purchase

• Confirm the screw head type is Pozidriv PZ3 to ensure compatibility.
• Assess whether extra-hard bits are preferable to more ductile options for your application.
• Check that your driver or bit holder accepts 1/4" hex shanks.
• Consider whether bulk quantity (100 pcs) fits your storage and usage needs.

Usage recommendations

For best results, pair the bits with a driver that allows torque control and use moderate speed when driving into hardwood or dense materials. Inspect bits periodically and rotate stock from the polybag to avoid prolonged exposure to moisture or contaminants that could affect performance.