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Two black chrome 7-spline lug nut keys, 16.5mm inner hole, 70mm long

Unique-Bargains

Unique-Bargains 2 Pcs Chrome 7 Spline Black Wheel Lug Nut Key 16.5mm

SKU CH-G43A-0BFR5

Two-piece 7-spline lug-nut key set in black chrome-finished through-hardened steel, 16.5 mm inner diameter for 19 mm and 21 mm nuts, 70 mm overall length

  • Fits 19 mm and 21 mm lug nuts with 16.5 mm spline drive
  • Through-hardened steel withstands torque well above wheel-installation requirements
  • Chrome plating over copper-nickel layers resists corrosion and maintains appearance
  • 70 mm overall length gives good leverage for manual tightening
  • Two keys included so a spare is always on hand

16.5 mm Spline Lug Nut Key

This two-piece set provides a 16.5 mm 7-spline socket for removing or installing locking lug nuts. Each key is machined from through-hardened steel and finished with a copper-nickel-chrome plating for corrosion resistance. The 70 mm overall length gives adequate leverage for hand tightening. It is intended for DIY owners and technicians who service wheels fitted with compatible spline-drive locks.

Replaces Lost or Damaged Spline Keys

If the original lock key supplied with a wheel-lock kit is missing or stripped, this pair restores the ability to service the wheels without destructive removal. The upgrade is worth it when the existing key no longer engages the splines cleanly or when a spare is wanted for a second vehicle. The through-hardened construction withstands the torque required for proper lug-nut tightening.

Verify Spline Count and Hex Drive Before Ordering

Confirm that the locking nuts on the vehicle use a 7-spline pattern with a 16.5 mm inner diameter. The key accepts a 19 mm or 21 mm hex drive, so ensure the corresponding socket or wrench is available. Tighten lug nuts by hand only; do not use impact or power tools. Manual measurement tolerance of 1 to 3 mm may apply.

How it compares

Measured against everything we stock in Valve Stem Caps & Wheel Locks, at today’s prices. Recalculated every night.

Price $8.99
Pricier than about 61% of the 760 comparable items (median $7.99).

Specifications

Product
Brand nameUnique Bargains

Questions about this item

Will the 16.5 mm spline socket clear my 19 mm or 21 mm lug nuts?

The 16.5 mm inner hole fits both 19 mm and 21 mm hex lug nuts; verify your nut size before use.

How do I install the key without stripping the splines?

Seat the 7-spline socket fully on the nut and turn by hand only — never use an impact gun or breaker bar.

When should I replace these keys?

Replace a key if the chrome finish flakes, the splines round off, or the 70 mm body shows cracks from over-torquing.

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