Wiha 79491 17-piece Screwdriver Insert Bit Set

Product Description

The WIHA 79491 is a 17-piece screwdriver insert bit set designed for use with 1/4 inch bit ratchets. The set covers the most common drive types encountered on the job: Hex, Phillips, Slotted, Square, and Pozidriv. With six Hex bits spanning 2.00 mm through 6.00 mm, three Phillips bits in sizes 1 through 3, two Pozidriv bits, two Slotted bits, and two Square bits, this set gives electricians, HVAC technicians, plumbers, and general trade professionals a compact, versatile bit kit for panel work, equipment installation, and general service calls. A bit holder and ratchet are included. The complete set weighs 0.56 pounds.

This insert bit set is suited for residential and light commercial trade work where a wide range of fastener types must be addressed from a single kit. The 1/4 inch ratchet drive format is standard across most bit holders, quick-change chucks, and inline screwdrivers found in trade tool kits. The included ratchet makes the set self-contained for hand-driving applications where a power tool is not practical or allowed, such as inside electrical panels or control cabinets.

Key Features

• 17-piece set covering Hex, Phillips, Slotted, Square, and Pozidriv tip types
• Six Hex bits: 2.00 mm, 2.50 mm, 3.00 mm, 4.00 mm, 5.00 mm, and 6.00 mm
• Phillips bits in sizes 1, 2, and 3
• Pozidriv bits in sizes 1 and 2
• Slotted bits in 4.5 mm and 6 mm slot sizes
• Includes bit holder and ratchet for hand-drive use
• 1/4 inch drive format compatible with standard bit holders and quick-change chucks

Compatibility

Designed for use with standard 1/4 inch bit ratchets, bit holders, and quick-change chuck systems commonly used in trade applications.

Installation Notes

Insert bits are intended for use by trade professionals working with hand ratchets or power tool bit holders rated for 1/4 inch shank bits. Inspect bits for wear or rounding before use, as a worn tip can damage fastener heads. When working inside energized electrical enclosures, follow NFPA 70E arc flash and shock hazard protocols before inserting or removing fasteners.