Wiha 70493 Screwdriver Insert Bit 1/4 5/16 3/8 Hex

Product Description

The WIHA 70493 is a magnetic screwdriver insert bit set designed for use with 1/4-inch, 5/16-inch, and 3/8-inch hex fasteners. Each bit features an overall length of 12 inches, making it well suited for reaching fasteners in confined or deep spaces where standard-length bits fall short. Constructed from steel with a magnetic tip, the 70493 provides consistent engagement and reduces the chance of dropped fasteners during installation. This set is a practical addition to any trade professional's bit assortment, whether used in electrical, HVAC, or mechanical service work.

The WIHA 70493 is appropriate for residential and light commercial service applications where hex-drive fasteners are common. The 12-inch length suits panel work, equipment enclosures, and other installations where access depth is a limiting factor. The magnetic construction helps seat fasteners before driving, which is especially useful in overhead or vertical installations. Electricians, HVAC technicians, and plumbers will find this bit set useful for equipment mounting, cover plate installation, and general service tasks.

Key Features

• Magnetic steel construction for secure fastener retention during driving
• Covers three hex sizes: 1/4 inch, 5/16 inch, and 3/8 inch
• 12-inch overall length for extended reach into deep or confined spaces
• Insert bit style compatible with standard bit holders and impact-rated adapters
• Compact packaging — 5 pieces per set

Compatibility

Designed as a standard 1/4-inch shank insert bit set for use with compatible bit holders, extension bars, and power tool adapters that accept insert-style bits.

Installation Notes

Insert bits should be seated fully into the bit holder before applying torque. Confirm the magnetic tip is free of debris before use to maintain proper fastener engagement. When used with power tools, verify the driver or adapter is rated for the application to avoid bit or fastener damage. Follow all applicable trade codes and equipment manufacturer guidelines when servicing energized or pressurized systems.