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A. The set contains three sockets covering the most common spark plug thread sizes. The 16 mm socket suits plugs with a 10 mm thread, the 18 mm socket suits plugs with a 12 mm thread, and the 21 mm socket suits plugs with a 14 mm thread.
A. All three sockets in this set are designed for use with a 1/2-inch square drive ratchet or torque wrench.
A. Each socket is forged from chrome vanadium steel, then hardened, tempered, chrome plated, and polished. This process provides both structural strength and corrosion protection for a long service life.
A. Each socket is fitted with a rubber insert that cushions and retains the spark plug, preventing damage to the ceramic insulator during both removal and refitting.
A. Next-day delivery is available on most products and will appear as an option at checkout where eligible.
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