Gross 13189 Magnetic Spark Plug Socket 1/2inch x 21mm (12-point)

Gross 1/2" x 21 mm – Heavy-Duty Magnetic Spark Plug Socket for Secure Handling and Precise Engagement The Gross 13189 magnetic spark plug socket is engineered for high-performance ignition system service. With a 21 mm 12-point profile, this socket offers precise engagement and smooth turning, while the built-in magnetic core securely holds spark plugs during extraction or installation. Compatible with all standard 1/2" drive tools. Specifications: Drive size: 1/2" square Socket size: 21 mm (12-point geometry) Retention system: High-strength internal magnet Construction: Durable chrome vanadium steel (Cr-V) Finish: Polished chrome-plated for corrosion resistance Application: Suitable for spark plug removal and installation in vehicles, motorcycles, and small engines Benefits: The magnetic retention system prevents spark plugs from falling or misaligning—especially useful in deep or narrow spark plug wells. The 12-point design distributes torque evenly to protect both tool and plug from damage. This socket is built for longevity and precise operation in busy workshops or home garages. Ideal for auto mechanics, power equipment technicians, and serious DIYers who need a reliable 21 mm spark plug socket with magnetic security for fast and safe spark plug servicing.