Sealey 1/2" Drive Magnetic Hexagon Spark Plug Socket 1/2" 21mm

About this tool

The 21mm magnetic spark plug socket with 1/2" drive is designed for larger spark plug applications typically found in commercial vehicles, older engines and certain performance applications. This larger diameter accommodates the bigger spark plug bodies whilst maintaining the same professional quality and magnetic retention that makes spark plug servicing efficient and frustration-free. The magnetic feature is particularly valuable when working overhead or in awkward positions where maintaining control of components is essential. Engineered from forged Chrome Vanadium steel with hardening and tempering treatment, this 21mm socket delivers the strength and longevity demanded by professional technicians. The chrome plated surface provides lasting protection against workshop chemicals and moisture whilst ensuring smooth operation. The 1/2" square drive offers universal compatibility with standard ratchets, extensions and torque wrenches for precise spark plug installation. Features and Benefits: • 21mm size accommodates larger spark plugs • Integrated magnet secures plugs during handling • Forged Chrome Vanadium steel construction • Hardened and tempered for enhanced durability • Chrome plated finish resists corrosion • 1/2" square drive for standard tool compatibility Specifications: Brand: Sealey Drive: 1/2"Sq Length: 62mm Nett Weight: 0.14kg Size(s): 21mm

Retailer description · Tooled Up · Observed 12 Oct 2026. Check the retailer’s listing for full specifications and contents.