1. Strong magnetism: This magnetic spark plug connector features powerful magnets at both ends. The rotating head securely holds the ratchet, while the attracts spark plugs, preventing them from loosening during installation or removal—making the process easier and more efficient. 2. Material: The magnetic spark plug wrench set is crafted from quality chrome vanadium steel, heattreated to ensure exceptional hardness, wear resistance, and rust resistance, guaranteeing a long service life. 3. Wide Compatibility: The set includes spark plug wrenches in 14mm and 16mm sizes, offering universal compatibility with various vehicles, including Nissan and MercedesBenz. 4. Function: With a 360degree swivel design for maximum flexibility, the magnetic core securely holds and protects the spark plug, simplifying installation and preventing candles from falling into the engine bay—unlike conventional duct seals.