This item fit all Chinese , such as , Buyang, Roketa, Coolsport, , BMX, Kazuma, Sunl, AIM-EX, Baja, Panterra, , Stream Eagle etc and various unlisted makes/models Fits models: GY6 QMJ/QMI157,QMJ/QMI152 4-stroke engines This coil can improve combustion efficiency, strengthen electrical performance Match up exactly with original equipment in , just replace and ride again, easy to install CDI box Feature: Fits: GY6 50cc-150cc 139QMB, 152QMI and 157QMJ engines Connector: AC fired, 6 Pin male plug The orange CDI is a ignition module that has no rev limit and also has a single stage advanced timing circuit, this means that you can get a faster response to rpm acceleration and a higher rpm limit at top end if you use the orange CDI Spark Plug Feature: Models: A7TC colour: Color as shown Material: aluminum size: Thread Diameter: 10mm Hex Size: 5/8 inch CDI dimension: 75mm x 42mm x 24mm(L x W x H) Ignition Coil Feature: Overall Length: 19 inch / 50cm Wire Length: 16 inch Package Contents: 1 * Ignition coil 1 * cdi box 1 * 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.