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The WIHA 72506 is a 30-piece set of hex screwdriver insert bits designed for use with 1/4 inch drive bit holders, power screwdrivers, and impact-rated handles. Each bit is sized at 7/64 inch hex with a 25mm overall length, making it well suited for fastener-dense work where consistent bit availability matters. The standard 1/4 inch drive shank fits the vast majority of bit holders used in electrical, HVAC, and mechanical service work. This set is a straightforward working supply of a single common hex size, packaged in quantity for bench stock or job-site replenishment.
The WIHA 72506 fits naturally into electrical panel work, equipment assembly, and general mechanical service where 7/64 inch hex fasteners appear frequently. Quantity-30 packaging suits service shops, contractors, and technicians who burn through bits regularly and prefer to keep spares on hand without reordering after every job. The insert format is compatible with standard bit holders and extension bars used across HVAC, plumbing, and electrical trades.
Designed for use with standard 1/4 inch drive bit holders, handles, and power tool chucks that accept insert-style screwdriver bits.
Insert bits should be seated fully into the bit holder before applying torque. Inspect bits before each use and replace any showing visible wear or deformation at the tip, as a worn hex bit can strip fastener heads. When using with a power driver, match the tool clutch setting to the fastener specification to avoid over-driving. No special tools or trade licensing are required for bit replacement.
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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