Diablo Magnetic Drive Bit Holder DBH300B 3 Inch 1 by 4 Inch Hex Shank (Impact Rated Screw Retainer Extension Driver Drill Accessory)

Diablo DBH300B 3-Inch Magnetic Drive Bit Holder 1/4-Inch Hex Shank

The Diablo DBH300B 3-Inch Magnetic Drive Bit Holder is an impact-rated extension tool forged from high-speed steel alloy to stabilize 1-inch insert bits in tight-clearance applications. Designed with a 1/4-inch quick-change hex shank, this 3-inch extension bar houses a high-coercivity permanent magnet that securely retains driver bits and steel fasteners to eliminate wobble, dropouts, and bit slippage under high peak torque load.

Best Used For:

• Confined Space Fastening: Extending standard 1-inch insert bits into narrow framing bays, cabinet interiors, and electrical enclosures.
• High-Torque Overhead Assembly: Holding steel wood screws and drywall fasteners firmly in place for stable one-handed overhead driving.
• Heavy Duty Impact Driver Use: Absorbing severe rotational impact shock during repetitive framing, decking, and metal stud construction.

Key Performance & Safety Features

• High-Strength Permanent Magnet: Integrated rare-earth magnet holds insert bits and metal screw heads securely to prevent fastener wobbling.
• Impact Strong Heat Treatment: Thermal processing strengthens the high-speed steel core to withstand high-impact rotational stress.
• Torque Resistant Torsion Zone: Flexes under extreme torque loads to reduce mechanical stress on both the holder body and inserted bits.
• Universal Bit Compatibility: Accepts all standard 1/4-inch hex insert bits including Phillips, Torx, Square, and Slotted drives.
• Corrosion-Resistant Protective Finish: Advanced surface treatment shields the steel construction against jobsite rust, humidity, and wear.
• Universal Quick-Change Hex Shank: Standard 1/4-inch hex power shank delivers firm chuck retention across all cordless impact drivers and drill chucks.

What's Included

• (1) Diablo DBH300B 3-Inch Magnetic Drive Bit Holder

Technical Specifications

Pro-Tip: Use 1-inch insert bits with this 3-inch magnetic holder rather than 2-inch power bits to keep your overall driving head compact while maximizing magnetic grip on wood screws.