Faster Spark & Stronger Energy Co$t Cut & Reliable Service Iridium and Platinum Center Electrode Available. Type Offered: - Insulator Projective Nose - Y- Groove Center Electrode - U / V- Groove Ground Electrode - Round Ground Electrode - 2/ 3/ 4- Ground Electrode - Surface Discharge Type - Semi- Conductive Type - Resister Type - Taper Type - Non Automotive Type Thread Diameter: 8mm, 10mm, 12mm, 14mm, 18mm Thread Length: 7. 8mm, 9. 5mm, 10. 9mm, 11mm, 11. 2mm, 12. 7mm, 17. 5mm, 19mm, 25mm, 26. 5mm Spark Gap: 0. 9mm, 1. 0mm, 1. 1mm, 1. 2mm, 1. 3mm, 1. 5mm Heat Range: 1- 2- 3- 4- 5- 6- 7- 8- 9- 10- 11- 12 Hexad Subtense: 16- 17. 5- 18- 19- 22- 26 Plug Performance: - Iridium central electrode cuts electrical waste and ensure stronger spark energy - Tapered ground electrode increases spark expension - New central core design ensures better electricity transmission and higher spark frequency - Proper designed space between ceramic central electrode shell and metal outer shell efficiently decrease over heating and carbon foul Factory Location: Ningbo, China Payment: T/ T. 30% when placing order, Balances before shipment. Minimum Order Quantity: 800 pieces