Manufactured from hardened and heat-treated Chrome Vanadium Steel for strength and durability. Specialised socket set including thin wall glow plug sockets designed to install and remove glow plugs without having to cut the power lead. Set includes 3/8"Sq Drive Pressure Sensor Glow Plug Socket with snap ring to ensure retention of glow plug. Includes five PSG plastic antistatic protection caps to prevent damage. Universal Joint for easy replacement and removal of glow plugs. Applications include Audi, Seat, Skoda, VAG, Mercedes-Benz, Fiat and PSA.;