Klein Tools 31089 12-Inch Dual-Lock Extension — 1/4-Inch Hex Shank Impact Bit Holder

Overview

The Klein Tools 31089 12-Inch Dual-Lock Extension is crafted for professionals who need extra reach without compromising bit security. Its dual locking design blends a quick-release collar with a secondary twist lock, supporting high-torque tasks in tight spaces while keeping bits firmly in place.

Extended reach for challenging setups

When fasteners sit hard to reach, this 12-inch extension helps you align bits exactly where you need them. The length is purpose-built for accessing recessed fasteners or awkward angles, so you can work from a more comfortable stance without sacrificing control.

• 12-inch length for accessing fasteners in tight or hard-to-reach spaces
• Compatible with all 1/4-inch bits for versatile use

Secure, intuitive operation

The dual locking system combines a quick-release mechanism with a secondary twist lock, reinforcing retention and reducing the risk of accidental bit release under load. Textured surfaces and a ridged release button help maintain a solid grip, whether you’re wearing gloves or not.

• Dual locking system reinforces security to prevent accidental bit release
• Ridged quick-release button and textured twist lock improve grip in challenging conditions

Built for impact work

Designed to handle demanding tasks, the extension uses an impact-rated 1/4-inch hex shank that stands up to impact drivers while staying compatible with standard drills. It works with all 1/4-inch bits, broadening your tool options on the job.

• Impact-rated 1/4-Inch hex shank for durability with impact drivers
• Compatible with standard drills and all 1/4-inch bits

Quality and heritage you can trust

From Klein Tools’ six-generation commitment to quality, this extension blends durable materials with precise workmanship. It’s built to perform in real-world scenarios while remaining reliable project after project.

Usage ideas

Use the 12-inch extension to reach fasteners behind panels, inside machinery, or in cramped working areas. Pair it with your favorite 1/4-inch bits for impact-supported tasks or routine drilling, knowing the tool is designed to withstand daily professional use.