Wera 851/1 PH 31 Piece Impaktor Phillips Screwdriver Bit Set

The Wera 851/1 PH 31 Piece Impaktor Phillips Screwdriver Bit Set is a professional-grade impact driver bit set designed for tradespeople who need reliability and longevity when driving Phillips screws at pace.

At the heart of this set is Wera's Impaktor technology — engineered specifically for use with impact drivers, where conventional bits quickly wear or cam out under repeated impulse loads. The rough diamond-particle coating on each bit tip bites into the screw head, dramatically improving grip and preventing the frustrating slipping that damages both the bit and the fixings.

The included Wera 897/4IMP R Impaktor Ring Magnet Holder is purpose-built to complement the bits, absorbing extreme impulse peaks through its double-torsion spring mechanism. The magnetic retention system holds screws securely in position — particularly useful for overhead work or when positioning long and heavy fixings single-handed.

Colour-coded by profile and size using Wera's Take it Easy tool finder system, the bits are quick to identify and swap out on site. The removable magnet adds versatility when working with metal substrates where magnetic interference may be a concern.

Features and Benefits:
• Impaktor technology for above-average service life under impact driver loads
• Diamond-particle coating on bit tip prevents cam-out and improves screw engagement
• Compatible with impact drivers and power screwdrivers via 1/4" hexagon drive (DIN ISO 1173)
• Double-torsion spring in holder absorbs extreme impulse peaks
• Magnetic bit holder securely retains long and heavy screws for accurate positioning
• Removable magnet for use in applications where magnetic interference is undesirable
• Colour-coded profile and size identification for fast bit selection on site
• 1/4" hexagon drive compatible with holders as per DIN ISO 1173-D 6.3

Contents:
30x Wera 851/1 Impaktor Phillips 25mm Screwdriver Bits: PH1 (x10), PH2 (x10), PH3 (x10)
1x Wera 897/4IMP R Impaktor Ring Magnet Holder

Specifications:
Bit Length: 25mm
Drive: 1/4" hexagon (DIN ISO 1173-F 6.3)
Bit Shank: 1/4" hexagon (DIN ISO 1173-D 6.3)
Holder Output: 1/4" hexagon (DIN ISO 1173-C 6.3)
Profiles Included: PH1, PH2, PH3
Total Pieces: 31