Wiha 71398 Ball Hex Bit Socket Set 1/4 in Drive 7 Pc

Product Description

The WIHA 71398 is a 7-piece ball hex bit socket set designed for 1/4 inch square drive applications. Each socket accepts a replaceable 1/4 inch hex bit, giving technicians the flexibility to swap out worn bits without replacing the entire socket body. The set covers seven inch-sized hex sizes from 3/32 inch through 1/4 inch, addressing the fastener range most commonly encountered in HVAC equipment panels, electrical enclosures, and light mechanical assemblies. All sockets feature a chrome-plated steel construction and mount on a storage rail for organized access. Weighing 0.48 pounds, the complete set is compact enough for a tool bag or service cart drawer.

This set suits trade professionals who regularly service equipment secured with ball-end hex fasteners, including HVAC technicians, electricians, and plumbers accessing equipment panels at off-angle entry points. The ball-end design allows fastener engagement at angles up to approximately 30 degrees off-axis, reducing the need to reposition in tight equipment bays. The replaceable bit design extends service life and lowers long-term tool cost for shops running high service volume.

Key Features

• 7-piece set covering 3/32, 1/8, 9/64, 5/32, 3/16, 7/32, and 1/4 inch hex sizes
• 1/4 inch square drive interface compatible with standard ratchets and extensions
• Ball-end hex bit allows off-axis fastener engagement in confined spaces
• Replaceable 1/4 inch hex bits reduce cost compared to replacing full sockets
• Chrome-plated steel construction for corrosion resistance and durability
• Mounted on a storage rail for organized, at-a-glance size selection

Compatibility

Designed for use with any standard 1/4 inch square drive ratchet, extension, or torque wrench.

Installation Notes

This set is a hand tool and requires no installation. Confirm the correct hex size before applying torque to avoid fastener rounding. When using the ball-end engagement feature at an angle, apply steady, controlled force to maintain bit-to-fastener contact. Inspect replaceable bits periodically for wear and replace as needed to prevent slippage on critical fasteners.