3/8 Drive VDE Insulated Socket 6-20mm

The upper end of the 3/8 drive insulated metric range is where individual purchasing makes the most sense, and this 20 mm single piece lets you buy exactly what your work demands instead of a full multi-piece set.

The insulated construction is designed for professionals who service heavy-duty electrical systems — transformer terminations, large breaker assemblies, bus bar connections, and high-amperage distribution panels. The 20 mm metric opening fits 20 mm hex fasteners precisely, which is especially important on critical hardware where rounding a bolt head can mean an expensive and time-consuming repair.

This tool accepts any standard 3/8 drive ratchet, extension, or T-handle, so it drops straight into the drive system you already carry. No adapters, no proprietary fittings, no compatibility questions.

Sold individually, this piece gives electricians and industrial maintenance technicians the ability to build out their insulated tool inventory in the upper metric range without buying sizes they already own. Whether you are filling a gap, replacing a lost favorite, or stocking a second field kit, single-size purchasing puts you in control of what you carry and what you spend.