NGK Spark Plug B10ES (7928) File:Chinatown manhattan 2004.jpg Wikimedia Commons. NGK have over 80 years of experience in spark plug manufacturing and are the world leader in spark plug technology. NGK has an extensive range of spark plugs, each with their own unique characteristics specifically engineered to its application and designed to suit a broad range of motorcycles, ATVs & UTVs in Australasia. With NGK's dedication to quality, outstanding reliability and state of the art manufacturing techniques, you can rely on your NGK Spark Plugs. Dont just ask for a spark plug, insist on NGK. The 98% pure copper core delivers increased heat dissipation for more reliable starts and reduced risk of overheating. While cold rolled threads prevent cross threading and damage to cylinder heads and a trivalent plating eliminates the need for anti seize. Complete with a high grade alumina silicate ceramic. Shell Thread Size: 14mm Thread Pitch: 1. 25mm Seat Type: Gasket Reach: 19mm (3 4") Hex Size: 21mm (13 16") Terminal Type: Removable Nut Overall Height: ISO Gap: 0. 5mm (0. 020") Centre Electrode Material: Nickel Type: Standard Size: 2. 5mm Projection: Non Projected Ground Electrode Material: Nickel Type: Standard Quantity: 1 Specifications Heat Range: 10