Spark Plug is a high performance spark plug.CDI: This is a AC CDI 2\/4 pins. AC fired, 6-pin connector, eliminates -limitIgnition Coil: Improve combustion, increase electrical performance.Fits:for ATC XR CRF 50cc 70cc 90cc 125cc 150cc engineMost models of Chinese Scooters, ATVs, Go-Karts Mopeds with 125cc - 150cc 4-stroke GY6 QMJ\/QMI157, QMJ\/QMI152 engines,such as e , SUNL, Kazuma, Roketa, JCL, BMX, JACKEL.for GY6 scooter such as Ruckus, Spree, Aero, Elite50cc 80cc 110cc 150cc 4 Stroke GY6 139QMB 152QMI 157QMJ Engine based ATV Scooter Moped, Dirt Bike Go Kart, such as PANTHER, , AIM-EX, , SUNL, ROKETA, COOLSPORT,KAZUMA, , BUYANG, AND Various unlisted makes and models, Tank, Roketa, GY6 QMI\/QMJ 152\/157, X-Treme, , Qingqi, Bajacolour:Black+orangeMaterial:ABSPackage Contents:1 x Ignition coil1 x AC CDI1 x Spark PlugOnly 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.