The Wera 855/4 IMP Pozidriv (PZ) Impaktor Screwdriver Bits are designed for demanding screwdriving applications using high-torque power tools and impact drivers. Featuring Wera Impaktor technology, these bits are engineered to withstand high loads and provide an extended service life. Their precision Pozidriv profile ensures a suitable fit in compatible screw heads, helping to reduce slipping during operation. The 1/4" hexagonal drive is compatible with suitable bit holders and power tools, making these bits ideal for professional industrial assembly, maintenance and installation tasks.