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Recommended.
Priced as of June 7, 2026
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Prices may varyThis product ranks #3 of 5 in Hex & Torx Keys.
Last reviewed June 7, 2026
TL;DR A 9-piece metric hex L-key set (1.5-10 mm) in CVM steel, hardened and nickel plated, with a rigid labeled plastic holder. Full metric coverage including critical 5 mm and 8 mm; no Torx, no SAE, no ball-end. Community reviewers consistently report tight fit and no deformation on automotive torque applications, which is the primary differentiator for this Wiha set over budget alternatives.
The Wiha 35191 is a 9-piece metric hex L-key set covering 1.5, 2, 2.5, 3, 4, 5, 6, 8, and 10 mm in Chrome-Vanadium-Molybdenum (CVM) steel, hardened and nickel plated per the Amazon product description. Form factor is a standard L-key with no ball-end tip: the keys provide high-torque leverage on the long arm and confined-space access on the short arm. All nine keys store in a rigid plastic holder with labeled size slots for each key. Community evidence is consistently positive on two points: tight tolerance fit that does not round close-tolerance fasteners, and no documented deformation under automotive torque across multiple independent reviews. Owners compare it favorably to cheaper budget sets that stripped or rounded fasteners. The nickel plating is specified as suitable for clean-room and non-oxidizing environments. No Torx or SAE hex keys are included; this is a metric-only set.
Right pick for a home mechanic whose vehicle fleet uses metric hex fasteners and who needs confirmed tight-fit precision: the 5 mm (brake caliper slides) and 8 mm (drain plugs, suspension hardware) critical sizes are both present, and the community record on fastener fit is stronger than most of the category. Skip this as a sole automotive hex-key investment if your vehicles use Torx hardware for brake and suspension work (T25, T27, T40, T45 are entirely absent), or if you need SAE hex coverage. A combo metric+SAE set with Torx keys such as the Bondhus ProHold covers a broader automotive fastener profile for a comparable price.
No chemical exposure pathway: CVM alloy steel L-keys with no SDS, no volatile compounds, and no aerosol generation in normal use; PPE does not apply to the keys themselves. Chrome-Vanadium-Molybdenum steel with a no-hassle lifetime guarantee supports a long service life; alloy steel keys are recyclable through standard ferrous scrap collection at end of life, and the plastic holder is separable. The product carries a California Prop 65 warning; for nickel-plated CVM steel tools, this disclosure typically traces to chromium and nickel compounds in the alloy and plating at concentrations above California's reporting threshold, not a specific use hazard from normal hex-key operation. Penetrating oils or thread-locking compounds used alongside these keys carry their own hazard profiles; check those products' individual reviews for applicable PPE guidance.
Nine metric hex keys: 1.5, 2, 2.5, 3, 4, 5, 6, 8, and 10 mm. Sizes confirmed from the Amazon product description, which lists them explicitly. No SAE (inch) hex sizes are included, and there are no Torx keys in this set.
No. The product description confirms 'burr free chamfered ends,' which means standard L-key tips on all nine keys. Ball-end geometry (rounded long-arm tip for off-axis engagement) is absent. Buyers who regularly work fasteners at an angle will need a separate ball-end hex set.
Chrome-Vanadium-Molybdenum (CVM) steel, hardened and nickel plated, per the Amazon product description. This is a premium alloy above standard chrome-vanadium; the nickel plating provides corrosion resistance suitable for clean-room and non-oxidizing environments per Wiha's product spec.
The product carries a California Prop 65 warning. For nickel-plated CVM steel tools, these disclosures typically trace to chromium and nickel compounds in the alloy and plating at concentrations above California's reporting threshold. The warning reflects California disclosure law; it signals that these metals are present above the state's threshold, not that a specific use hazard exists from normal hex-key operation.
For metric hex fasteners, yes: 5 mm (brake caliper slides, common Allen bolts) and 8 mm (many drain plugs, suspension hardware) are both present, and community reviewers confirm no deformation on automotive torque applications. The set covers metric hex entirely. It does not cover Torx sizes (T25, T27, T40, T45, etc.) that are common on European and modern domestic brake and suspension hardware; a separate Torx key set is required for those fasteners.
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