Genius Tools Impact Extension Bar 400mm Length 1 Inch Drive Heavy-Duty Steel - 840400B

Genius Tools Impact Extension Bar 400mm Length 1 Inch Drive Heavy-Duty Steel - 840400B Impact Extension Bar

This 1" drive impact extension bar is built to extend reach while maintaining secure engagement under impact use. With a 400mm (15.75 in.) overall length and a steel ball retention design, it helps access fasteners in deeper or obstructed locations without sacrificing fit.

Manufactured from Chromium Molybdenum Alloy Steel, it is designed for high strength, durability, and anti-corrosive performance. The bar is heat treated through oil quenching and finished with a matte black oxide coating to support long-term professional use and dependable torque transfer.

Key Benefits

• 400mm (15.75 in.) length improves access to recessed or hard-to-reach fasteners.
• 1" drive impact-ready design supports demanding, high-torque professional applications.
• Chromium Molybdenum Alloy Steel construction provides strength, durability, and corrosion resistance.
• Steel ball retention helps keep sockets securely seated during impact operation.
• Oil-quenched heat treatment enhances core strength for long service life.
• Matte black oxide coating adds exterior toughness for heavy-duty shop conditions.
• Permanently stamped size markings make identification fast and organization easier.

Meets or exceeds ANSI standards and is backed by the Genius Tools Limited Lifetime Warranty against manufacturer defects. SKU: 840400B. Designed for professional technicians, it delivers consistent performance where impact-rated reach and durability are required.