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wera_05057421001
wera_05057421001
wera_05057421001
wera_05057421001
wera_05057421001
wera_05057421001
wera_05057421001
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wera_05057421001
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wera_05057421001
wera_05057421001

WERA Bit-Check 12 Diamond 1 screwdriver bit set 12-piece - 05057421001

Supplier number: WERA 05057421001 | EAN 4013288180025
Recommended Retail Price €82.00
37.20 tax incl.
€30.74 excl. VAT (incl. all environmental contributions)
On order: delivered from 10/10/2026
set

  • Delivery by DHL

Precise driving with Wera

Practical benefits
  • Secure grip without slipping: The diamond coating bites firmly into the screw head so you avoid cam-out and reduce required contact pressure.
  • Extended bit service life: An integrated torsion zone absorbs peak loads, protecting the tip from premature wear and breakage.
  • Rapid one-handed bit changes: With the Rapidaptor quick-release chuck, you change bits in seconds without needing extra tools.

In a nutshell

The right choise for

With the Wera Bit-Check 12 Diamond 1 screwdriver bit set, you handle demanding screwdriving tasks with total control. The 11 BiTorsion bits feature a diamond coating that bites securely into the screw head, preventing cam-out and slippage while reducing the required contact pressure. An integrated torsion zone absorbs peak loads effectively to protect bit tips against premature wear and breakage. The included 1/4" Rapidaptor universal holder allows swift, one-handed bit changes without handling the sleeve. Compact and organised, this set keeps your essential Phillips, Pozidriv, and Torx bits right at your fingertips on any job site.



€37.20
tax incl.

Product information

Key features according to our expert

  • Type of drive profile (bit): Mixed; Phillips; Pozidriv; Torx
  • Connection size (bit): 1/4"
  • ESD: No
  • VDE approved: No
  • Quantity per set: 12
  • Product Range: Wera Bit-Check

Scope of delivery

  • Bit-Check 12 Diamond 1, 12 pieces
  • 1x 889/4/1 K Rapidaptor Universal Bit Holder: 1/4" x 50 mm
  • 3x 851/1 BDC bits: PH 1x25 mm, 2x PH 2x25 mm
  • 3x 855/1 BDC bits: PZ 1x25 mm, 2x PZ 2x25 mm
  • 5x 867/1 BDC TORX® bits: TX 10x25 mm, TX 15x25 mm, TX 20x25 mm, TX 25x25 mm, TX 30x25 mm

Product description

Bits with tiny diamond particles on the bit tip. This ensures a secure fit in the screw head, reduces the contact pressure required and lowers the risk of slipping. BiTorsion bits with a torsion zone - where kinetic energy is diverted from peak loads. This greatly extends the product service life. Comes with Rapidaptor technology, which allows bits to be attached without any need to actuate the sleeve. The removal of the bit is simple, just by pushing the sleeve forward - for rapid bit change with just one hand. For insertion in the power screwdriver or into the chuck of the power drill. The multi-component Bit-Check is convincing on account of its low weight and the maximum possible degree of compactness. In this respect, the soft material in the lower section of the Bit-Check ensures that the bits are securely held whilst being simple to remove at the same time. The profile and size of the bits are easy to recognise thanks to the Wera Take it easy Tool Finder with its colour coding and clearly visible imprint.

  • Upright positionable Bit-Checks convince due to their functionality in a minimum of space
  • BiTorsion bits for long service life
  • Diamond coating for a secure fit in the screw, literally bites into the screwhead to prevent cam-out
  • Rapidaptor holder for rapid bit change
  • Take it easy tool finder: colour coding according to profile and size
1 bit holder Rapidaptor with quick-release chuck, 11 BiTorsion bits for long service life, diamond-coated (BDC) for secure screw fit. The Take it easy Bit-Checks have bits with a sleeve which - from its colour and size designation - make it simple to access the right bit quickly.

Features and benefits

  • The Bit-Checks can be positioned upright at the workplace so the tool is always quickly to hand.
  • Peak forces that occur in power tool applications often result in premature wear of bits or damage to the screw head. This usually occurs during initial power-up and the when the screw comes to a standstill. Screwdriving could become more productive and safer if these peak loads could be minimised. The Wera BiTorsion system prevents premature wear. The service life of the tool is extended and the productivity of power tool applications significantly increased.
  • The diamond coating of the DC bits lowers the danger of slipping as the minute diamond particles literally "bite" themselves into the screw head.
  • The minute diamond particles applied to the tip of the tool literally "bite" into the screw and ensure an exact, anti-slip fit in the head of the screw. This secure fit protects the screw. The cam-out forces which compel the user to apply greater pressure to the screw are considerably reduced.
  • Ideal for sensitive materials
  • Lightning-fast bit change without any extra tools. One-handed operation. With fast-rotating sleeve for easy wielding of the screwdriver.
  • Bitholders, magnetic, for easier application of the screw
  • The Take it easy Bit-Checks have bits with a sleeve which - from its colour (e.g. red = Phillips) and size designation - make it simple to access the right bit quickly.

All Features

Type of drive profile (bit)
Mixed; Phillips; Pozidriv; Torx
Connection size (bit)
1/4"
Esd
No
Vde approved
No
Quantity per set
12
Product range
Wera Bit-Check
  • Brand WERA
  • EAN 4013288180025
  • Supplier number WERA 05057421001

Frequently asked questions about this product

Answered by specialists
Which screwdriver bits are included in this set?
The set includes 11 BiTorsion 25 mm bits (PH 1, 2x PH 2, PZ 1, 2x PZ 2, TX 10, TX 15, TX 20, TX 25, TX 30) and 1 Rapidaptor bit holder.
What is the advantage of the diamond coating on these bits?
Tiny diamond particles bite into the screw head, significantly reducing slippage (cam-out) and lowering the required contact pressure.
How does the included Rapidaptor bit holder work?
The 889/4/1 K holder allows quick one-handed bit changes. Insert bits directly without touching the sleeve and push forward to release.
Can these bits be used with an impact driver?
These BiTorsion bits absorb peak loads effectively, but are primarily designed for drill drivers and screwdrivers with a 1/4" chuck.
Are the tools in this set insulated for electrical work?
No, this set is neither VDE-certified nor ESD-safe. Do not use these bits on live electrical circuits.
Questions about this product?

Our product specialists are happy to help with any questions about this range. Call, email or chat with us!

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