Wiha 28189 Screwdriver Insert Bit Set 15 Piece

Product Description

The WIHA 28189 is a 15-piece screwdriver insert bit set covering four drive types: hex, Phillips, slotted, and Torx. It is built for trade professionals who need a broad range of bit types in a single organized kit. The set spans hex sizes from 1/8 inch through 3/16 inch, eight security Torx sizes from T-6S through T-25S, Phillips sizes 1 and 2, and two slotted sizes. Electricians, HVAC technicians, and plumbers regularly encounter fasteners across all four of these drive types during equipment installation and service. The set weighs 1.75 pounds.

This insert bit set suits residential and light commercial service work where a technician encounters mixed fastener types on a single job. Security Torx bits are commonly required on HVAC equipment panels, electrical enclosures, and plumbing fixture assemblies. The hex bits cover metric-equivalent inch sizes ranging from 3/32 inch to 3/16 inch, making the set useful across both domestic and imported equipment. The included handle and organized storage make this a practical field kit for technicians who carry toolkits to job sites.

Key Features

• 15-piece set covering hex, Phillips, slotted, and security Torx drive types in a single kit
• Security Torx sizes T-6S, T-7S, T-8S, T-9S, T-10S, T-15S, T-20S, and T-25S
• Hex sizes: 1/8, 3/32, 5/32, 7/64, 9/64, and 3/16 inches
• Phillips sizes 1 and 2 included alongside two slotted bits
• Includes a handle for direct use without a separate driver
• Compact 1.75-pound kit suitable for field tool bags

Compatibility

Designed as a general-purpose insert bit set compatible with standard bit handles and power tool bit chucks that accept 1/4-inch hex shank insert bits.

Installation Notes

Insert bits should be seated fully into the driver handle or power tool chuck before applying torque. When working on electrical enclosures or energized equipment, de-energize and lock out the circuit before removing or replacing any fasteners. Use the correct bit size to avoid fastener head damage, particularly on security Torx fasteners where cam-out can strip the recess. Consult applicable codes such as NFPA 70 (NEC) when performing electrical panel work.