851 4 11 PH Piece Impaktor Phillips Screwdriver Bit Set

The Wera 851/4 11 Piece Impaktor Phillips Screwdriver Bit Set is a professional-grade impact driver bit set designed for high-volume screwdriving with Phillips-head screws. Built around Wera's Impaktor technology, the PH2 bits are engineered to withstand the extreme torque and impulse peaks generated by impact drivers, delivering an above-average service life compared to standard screwdriver bits. The rough diamond-particle coating on each bit tip bites into the screw head, significantly reducing cam-out and improving drive efficiency — a common frustration for contractors and tradespeople working at pace. The set also includes a Wera 897/4IMP R Impaktor Ring Magnet Holder, featuring a double-torsion spring to absorb impulse peaks and protect both the bit and the fastener. The magnetic ring securely holds long and heavy screws in position, making it particularly useful for overhead work or awkward access points. Where magnetism is undesirable — such as when working near sensitive metal components — the magnet can be repositioned away from the screwdriving zone and effectively neutralised. This set is well-suited to carpenters, joiners, and general contractors who rely on impact drivers for high-output fixing work. All components use a 1/4" hexagon drive, compatible with standard power screwdrivers conforming to DIN ISO 1173-F 6.3.

Features and Benefits:

• Impaktor technology for above-average service life under impact driver use
• Diamond-particle coating on bit tips prevents cam-out and slipping
• Includes Impaktor Ring Magnet Holder with double-torsion spring
• Magnetic holder secures long and heavy screws for reliable positioning
• Removable magnet for use in situations where magnetism is undesirable
• Ideal for overhead work and awkward fixing positions
• 1/4" hexagon drive compatible with DIN ISO 1173-F 6.3 power screwdrivers Contents: 10x Wera 851/4 Impaktor Phillips 50mm Screwdriver Bits: PH2 1x Wera 897/4IMP R Impaktor Ring Magnet Holder

Specifications: Drive: 1/4" hexagon (DIN ISO 1173-F 6.3) Bit Length: 50mm Bit Size: PH2 Bit Quantity: 10 Holder Output: 1/4" hexagon head drive (DIN ISO 1173-C 6.3)