Spark plugs are a professional consumable for the maintenance of 4-stroke gasoline engines. This 50-unit box of NGK BPMR7A is perfect for workshops, distributors or technical services that perform frequent overhauls of machinery. With 14 mm threads, a thread length of 9.5 mm and an electrode gap of 0.7 mm, they are compatible with chainsaw or brushcutter engines. Thanks to a nickel alloy electrode, an internal resistor and a copper core, reliable starting and efficient combustion are guaranteed even under demanding conditions.