suitable for Spark Plug Thread Repair Tools, High Speed Steel Tap Spark Plug with M14X1.25 Inserts and M16X1.25-FO SHAN RAN WANG These threaded inserts are made of Metal with galvanized technology on the surface, which has high hardness and is not afraid of abrasion. These inserts and taps have standard threads for repairing 14mmx1.25mm spark plugs. Tapping is efficient and labor-saving, very suitable for gasoline engines, generators, engines, etc. Material: Metal colour: silver+gold Package Contents: 12 x screw inserts 1 x M16 straight flute tap Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. Please pay attention to the title and description when buying, and pay attention to the title and description when buying.