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The WIHA 28390 is a 15-piece interchangeable bit screwdriver handle set built for trade professionals who need a single handle platform covering multiple drive types. The handle uses a Wiha Softfinish multi-component cushion grip designed for ergonomic comfort and maximum torque transfer. All bits are precision machined from chrome-vanadium-molybdenum tool steel, through hardened for wear resistance, and finished with a chrome-plated, exact-fit black tip coating. The set is VDE-rated and meets IEC 60900 insulation standards, making it suitable for work on energized systems up to the rated voltage. At 0.72 pounds, the handle is lightweight enough for all-day use.
This set is intended for electricians, HVAC technicians, and other trade professionals who routinely work across multiple fastener types on electrical panels, controls, and equipment enclosures. The included bit assortment covers Phillips sizes 1 and 2, slotted sizes 3 mm, 4 mm, 5.5 mm, and 6.5 mm, Square sizes 1 and 2, Torx sizes T8, T10, T15, and T20, and Xeno terminal bits size 1. That range addresses most fastener types encountered in residential and light commercial electrical, HVAC control wiring, and panel service work.
Designed as an interchangeable bit screwdriver handle accepting the included 14 bits across Phillips, Slotted, Square, Torx, and Xeno terminal drive types. Bit compatibility with other WIHA interchangeable bit system bits is not confirmed by the input data and should be verified with the manufacturer before substituting bits.
This tool is intended for use by licensed electricians and qualified trade professionals working on electrical equipment. Even with an insulated, VDE-rated handle, de-energize and lockout-tagout circuits whenever possible per NFPA 70E safe work practices before using any hand tool on live components. Inspect the handle and bits for cracks, chips, or damage before each use; damaged insulation renders the insulation rating void. Store bits separately to avoid contact damage to the chrome-plated tips.
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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