KS Tools 159.1174 prolunga portabit 210 mm 1/4" (6,3 mm)

Extend the reach of your 1/4" hex bits with this 210 mm bit extension from KS Tools. Ideal for mechanics and technicians working in tight engine bays or deep recesses, it allows you to drive screws and fasteners where a standard bit holder cannot reach. The extension features a quick-change chuck for fast bit swaps and a magnetic tip to hold bits securely in place.

Key specifications

• Drive size: 1/4" (6.35 mm) hex input and output
• Overall length: 210 mm
• Material: Chrome vanadium steel
• Surface finish: Chrome-plated, polished
• Bit holder mechanism: Quick-change chuck
• Magnetic tip: Yes
• Shaft design: Hexagonal
• Locking mechanism: Ball lock
• Standard compliance: DIN 3126-E 6.3

Why choose it

Chrome vanadium steel construction ensures durability and resistance to wear, while the polished chrome finish provides corrosion protection and easy cleaning. The quick-change chuck allows for rapid bit changes without tools, and the magnetic tip keeps bits from falling out during use. The ball lock mechanism securely holds bits in place, preventing accidental release.

Ideal use cases

• Automotive repair and maintenance
• Machinery assembly and disassembly
• Furniture assembly in deep or narrow spaces
• HVAC and appliance repair

Good to know

The extension is compatible with all standard 1/4" hex bits and works with power drills, cordless screwdrivers, and impact drivers. The hexagonal shaft provides a secure grip in the drill chuck and prevents slipping during high-torque applications.