Wera 05057750001 20-Piece Diamond-Coated Screwdriver Bit Set with Universal Holder, 1/4 inch Hex Drive, 25 mm Length

This 20-piece screwdriver bit set from Wera delivers a comprehensive range of diamond-coated bits in a compact Bit-Check case, engineered for maximum grip and reduced cam-out in demanding fastening tasks. The set includes Phillips, Pozidriv, Torx, and Hex-Plus profiles, each with a torsion zone to absorb peak loads and extend bit life. A universal bit holder with retaining ring ensures secure bit retention and quick changes, making this set ideal for both power tool and manual applications.

Advantages

Diamond coating on the bit tips creates a micro-rough surface that bites into screw heads, virtually eliminating cam-out and reducing the required contact pressure. The torsion zone effectively cushions load peaks, protecting the bit from premature wear and breakage. Hex-Plus geometry offers a larger contact area in hex socket screws, preventing rounding and allowing higher torque transfer. The included universal bit holder with retaining ring holds bits firmly yet allows one-handed bit changes. The compact Bit-Check case provides organized storage and quick access, with clear labeling for each bit position.

Suitable for

• Professional tradespeople and DIY enthusiasts working with power tools or manual drivers
• Fastening Phillips, Pozidriv, Torx, and hex socket screws in wood, metal, and plastic
• Applications requiring high torque transfer and reduced risk of screw head damage
• Mobile use where a compact, organized bit set is essential

Key specifications

• Number of pieces: 20 (19 bits + 1 universal bit holder)
• Bit length: 25 mm
• Drive size: 1/4 inch hex
• Bit holder type: 899/4/1 Universal Bit Holder with retaining ring
• Bit coating: Diamond coating
• Bit material: High-quality tool steel
• Bit design: Torsion zone
• Storage type: Bit-Check plastic case
• Included bit profiles: PH 1, PH 2, PH 3; PZ 1, PZ 2, PZ 3; TX 10, TX 15, TX 20, TX 25, TX 30, TX 40; Hex-Plus 3.0, 4.0, 5.0, 6.0, 8.0 mm

Recommendations

Pair this set with a Wera Rapidaptor bit holder or a 1/4" drive bit screwdriver for maximum convenience. For heavy-duty applications, consider using an impact-rated bit holder. Always match the bit profile exactly to the screw head to preserve both bit and fastener.