Brüder Mannesmann M179 1/2 inch Manual Impact Driver with 4 Bits in Metal Case, Red

Manual impact driver with 1/2" square drive and hammer-driven rotational impact for loosening seized screws and bolts. Includes 4 chrome vanadium bits (PH2, PH3, SL8, SL10) and a robust metal storage case.

Overview

The Brüder Mannesmann M179 is a manual impact driver designed for heavy-duty loosening tasks. Its 1/2" (12.5 mm) square drive delivers powerful rotational impact when struck with a hammer, making it ideal for automotive, machinery, and general repair work where fasteners are corroded or over-tightened. The set includes four chrome vanadium steel bits—two Phillips (PH2, PH3) and two slotted (SL8, SL10)—with a 5/16" (8 mm) hex shank. Everything is stored in a sturdy metal case for protection and organization.

What stands out

• Hammer-driven impact mechanism breaks loose stubborn fasteners
• 1/2" square drive compatible with standard impact sockets
• Includes 4 CrV bits: PH2, PH3, SL8, SL10
• Robust metal case for safe storage and transport
• Red finish for high visibility in the workshop

Technical details

• Tool type: Manual impact driver
• Drive size: 1/2 inch (12.5 mm)
• Set contents: 1 impact driver, 4 bits, 1 metal case
• Number of pieces: 6
• Bit types: Phillips, slotted
• Bit sizes: PH2, PH3, SL8, SL10
• Bit shank: 5/16 inch (8 mm) hex
• Bit material: Chrome vanadium steel (CrV)
• Case material: Metal
• Colour: Red

Our verdict

A reliable manual impact driver set for professionals and DIYers who need to tackle seized fasteners without power tools. The inclusion of four common bits and a metal case makes it a practical addition to any toolbox.