DURATECH Spark Plug Socket Set, 5-Piece SAE & Metric Cr-V Spark Plug Sockets (14 mm, 18 mm, 5/8", 3/4", 13/16"), 6 Point & 1Premium Steel: Different from other cheap spark plug sockets that are made of carbon steel, our spark plug sockets are made of heat treated chrome... £33.98OnBuy.comDelivery: in United Kingdom ReportBuy!