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The WIHA 71930 is a hex screwdriver insert bit designed for use with 1/4 inch hex drive power tools and manual bit holders. It measures 1 inch in overall length and is sized for No. 2 cap screws. This insert bit is sold in a pack of 10, making it a practical choice for shops and service vans that go through bits regularly. Electricians, HVAC technicians, plumbers, and general service pros use insert bits like these for fastening panel covers, junction boxes, equipment housings, and a wide range of threaded fasteners encountered on the job.
The 71930 fits standard 1/4 inch drive quick-change bit holders and is compatible with both cordless impact drivers and manual screwdrivers equipped with a 1/4 inch hex chuck. The 1 inch overall length is suited for standard-access applications where longer bits are unnecessary. The No. 2 hex size covers a common cap screw dimension found across HVAC, electrical, and plumbing equipment installations. Buying in a 10-pack reduces downtime from worn or misplaced bits during high-volume service work.
Designed for use with any 1/4 inch hex drive bit holder, quick-change chuck, or cordless screwdriver or impact driver accepting standard 1/4 inch insert bits.
Insert bits are installed and removed by hand into a 1/4 inch quick-change or magnetic bit holder — no tools required for bit changes. Confirm the drive tool is powered off or the battery is removed before changing bits in a cordless driver. Do not use insert bits in high-torque impact settings beyond the rated capacity of the bit to avoid tip rounding or breakage. Replace worn bits promptly to prevent fastener head damage.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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