Specifications: Suitable for fireplaces and advertisement home equipment and any Gas items Surface material: stainless steel with zinc Applicable fuel series: / propane / butane/NG Ceramic Length:58mm size: M10*1 Color: black + white material: steel Package Contents: 5X electrode Safety warning: This is a Universal Thread in case your installation hole length is Over 10mm and less than 14mm. If cannot establish nicely you are able to do some small adjustments on your product. Only the above package content, various merchandise should not included. Note: Light and various reveals can cause the color of the item within the photograph barely various from the genuine thing. The size allowed error is +/- 1-3cm.