SOCKET 21MM 1/2 FOR CANDLES.
Cap specially prepared for screwing in and unscrewing spark plugs in cars with spark engines. Made of chrome vanadium steel CrV 50BV30, adapted to work with YATO rattles of 1/2" size or with a 24 mm eyelet wrench. The cap has a special rubber insert that supports the hot candle when pulling out of the socket in the engine head. The insert protects the candle against falling out and damage to its ceramic insulation. Especially recommended for professional car services.