• For Phillips screws
• BiTorsion zone to absorb peak loads
• Considerable reduction in the risk of breakage, significant increase in service life
• Tough for hard materials
• 1/4" hexagon drive (Wera connecting series 4)
• Take it easy tool finder: colour coding according to profile and size

BiTorsion bits for Phillips screws with Torsion zone where kinetic energy is diverted from peak loads. This greatly extends the product service life. Tough viscous for universal use; 1/4" hexagon, suitable for holders as per DIN ISO 1173-F 6.3.

The Wera Tools 851/4 BTZ PH Series is a high-performance set of tools specifically designed for working with Phillips screws. With its innovative features and exceptional durability, this series offers reliable and efficient solutions for various applications.

The 851/4 BTZ PH Series is built to handle Phillips screws with ease. Whether you're dealing with standard Phillips screws or specific variations, these tools provide a precise fit, ensuring secure fastening and efficient loosening.

One standout feature of the 851/4 BTZ PH Series is its BiTorsion zone. This specially engineered section of the tool absorbs peak loads during fastening or loosening tasks, significantly reducing the risk of breakage and increasing the overall service life of the tool. This feature enhances durability and reliability, making the series a long-lasting and cost-effective choice.

Designed to tackle tough materials, the Wera Tools 851/4 BTZ PH Series is tough and resilient, making it particularly suitable for hard materials. Whether you're working with metal, hardened plastic, or other challenging surfaces, these tools deliver exceptional performance, providing reliable results in demanding applications.

Equipped with a 1/4" hexagon drive, the Wera Tools 851/4 BTZ PH Series is part of the Wera connecting series 4. This drive size ensures compatibility with a wide range of Wera accessories and power tools within the connecting series 4, allowing for seamless integration and versatility in tool selection.

Additionally, the series incorporates the "Take it easy" tool finder system, which utilizes color coding according to the profile and size of the tool. This intuitive system simplifies tool selection by providing visual cues, saving time and effort while ensuring quick and accurate identification of the required tool for the task at hand.

In summary, the Wera Tools 851/4 BTZ PH Series is the ultimate choice for professionals and enthusiasts working with Phillips screws. With its BiTorsion zone, it provides increased durability and reliability, reducing the risk of breakage. The series excels in toughness, making it suitable for hard materials, and its 1/4" hexagon drive ensures compatibility with other Wera tools. With the "Take it easy" tool finder system, tool selection becomes a breeze. The Wera Tools 851/4 BTZ PH Series guarantees exceptional performance, longevity, and ease of use in every application.

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 effectiveness of the BiTorsion system comes from a combination of two shock-absorbing spring elements. Both, bits as well as holders have a cushioning torsion zone that diverts the kinetic energy away from the drive tip during peak loads.

The torsion spring integrated into the unique BiTorsion holder absorbs lower levels of peak loads (Phase 1). Any overloading of this spring is effectively prevented by means of a supporting mechanism.

Higher peak loads are minimised through the torsion effect of the bit shaft (Phase 2).

Even the service life of conventional bits is enhanced with the use of the BiTorsion holder and the BiTorsion bit also functions in a normal holder.

The optimally coordinated features of the torsion zones on the bit and holder permit a phased yield when under strain. The two-phase system prevents premature wear. Moreover, a long tool service life is also ensured by the hardness of the bits that matches the respective application.

The BiTorsion holder and the BiTorsion bit can, of course, be used independently of one another.

"Take it easy" tool finder with colour coding according to profiles and size stamp - for simple and rapid accessing of the required tool.