Nicofie Impact 4in Allen Wrench Drill Bit Set – 20pc Metric & SAE, 1/4" Hex Shank

Overview

The Nicofie Impact 4in Long Allen Wrench Drill Bit Set is built for versatility, offering extended reach and dependable performance across hex-drive tasks. This 20-piece collection combines metric and SAE hex bits with a practical 1/4" hex shank and a 2.3" extension socket, all housed in a compact storage box for easy transport and quick access.

Extended reach for tighter spaces

With a 4" overall length and a included 2.3" extension socket, this set is designed to access fasteners in hard-to-reach areas. It’s a useful companion for automotive work, appliance maintenance, or DIY projects where angle and depth matter most.

• 20 hex bits: 10 metric and 10 SAE for broad fastener coverage
• 4" extended length plus 2.3" extension socket for extra clearance
• Torsion zone design to absorb torque peaks and reduce shank stress
• S2-grade alloy steel body with CNC-machined tips for strength and precision
• Manganese phosphate coating provides rust resistance for longer life
• 1/4" hex shank compatibility with most impact drivers
• Includes a compact storage box to keep bits organized

Durability and precision you can rely on

The set uses a rugged S2 alloy steel body, with CNC-machined tips and a hardened core to maximize bit strength and minimize breakage. The rust-resistant manganese phosphate coating helps maintain a clean, ready-to-use feel through frequent use. The torsion zone design is engineered to absorb torque surges, helping extend the life of the bits during heavy screw driving.

What’s included and how it helps

20 hex bits are split into two familiar families: metric (1.5–8 mm) and SAE (5/64"–1/4" and 5/16"), all sharing a standard 1/4" hex shank. This combination supports a wide range of fasteners and projects, providing ready-to-use options without swapping tools mid-task.

Usage tips and care

For best results, pair the bits with a compatible impact driver to leverage the extended reach and torsion-friendly design. After use, wipe clean and store in the included box to minimize surface wear and keep your kit ready for the next job.

Why choose Nicofie

Nicofie backs this hex bit set with a commitment to quality and responsive support. If you have questions about fitment or usage, a tailored solution is typically provided within 24 hours.