This brand Performance Spark Plugs with High Performance Three Electrode Head,Special Material of electrode, and Strong Spark, Gives Spark Three Paths To Follow, Specifically Designed To Boost Performance Of the Engine Replaces: A7TC, C7HSA,CR7HSA, 2795, UR3AS & Z9Y.Fitment Horizontal Engine Series: 50cc,70cc,90cc,110cc,125cc dirt bikes ATVs 5. Fits for GY6 Engine Series with CVI Belt Transmission: All Chinese Made 50cc 139QMB, 125cc 150cc 154QMI 157QMJ Scooters, ATVs and Go-Carts Extra : Ordinary spark plugs use single claw ignition, while three-level spark plugs use three-claw ignition, high melting point, to better the integrity of its electrode.Lifting power: Because the center electrode delivery end is three claws easy to gather more electricity, three claw points more easily breakdown spark gap, to that the gasoline engine has a good starting performance and acceleration performance. Reduce carbon deposition: Since the center electrode has three claws, it is easy to stabilize at the optimum temperature range between self-cleaning combustion and heat accumulation combustion, thereby reducing carbon deposition.Save fuel: Because the center electrode is three-jaw, its heating center electrode consumes less heat, the fire nucleus is easy to spread, more fully, more saves the fuel oil. color: red material: metal Dimensions: thread diameter 10MM; thread length 12.7MM Package Contents: 3 * spark plug Only the above package content, other products are not included. Note: Light 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.