Description
Wera Tools 05073990001 – 897/4 IMP R SB Impaktor Holder w/ Retaining Ring & Ring Magnet, 1/4″ x 75 mm
The Wera Tools 05073990001 is an Impaktor Holder designed to meet the demands of extreme impulse peaks, making it ideal for use with customary impact drivers. Its 1/4″ hexagon drive makes it compatible with bits with a 1/4″ hexagon head drive, and it measures 75mm in length.
This Impaktor Holder features a retaining ring and a magnet that work together to hold bits securely in place during use. The double-torsion spring design helps absorb the impact of extreme impulse peaks, ensuring a longer service life for your bits.
The ring magnet in this Impaktor Holder is particularly useful for holding longer and heavier screws, making it an ideal choice for professionals who need to work with a variety of fasteners. This feature also helps prevent dropped screws and bits, saving you time and frustration.
Overall, the Wera Tools 05073990001 is a reliable and durable Impaktor Holder that will make a great addition to any professional or DIY tool kit.

Impaktor technology for an above average service life even under extreme demands
Impaktor holder with ring magnet
The Impaktor holder with ring magnet additionally holds longer and heavier screws absolutely securely. This enables a speedy and dependable positioning of the screw. It is also ideal for abovehead work. Should the magnet function not be required in a particular situation e.g. when working with metal, it can be extracted from the screwdriving area and can thereby be “disabled”. Mainly used in manual power tool applications.


Impaktor holder
Suitable for extra high torque e.g. from modern 18 volt impact screwdrivers with particularly high resilience. Reduces the risk of premature breakage of the holder or bit and increases the productivity when screwdriving with power tools.
Impaktor system
Wera’s Impaktor system consisting of Impaktor bits and Impaktor holders is today’s necessary addition to the BiTorsion system with the creation of the TriTorsion system.


Versatile
Wera Impaktor bits and holders can also be used individually. However, the best results are achieved with the combination of the two tools that are optimally matched to one another.
Product General Attributes | |
|---|---|
| Product Weight | 0.15 LBS |
| Country of Origin | Czech Republic |


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