Overall Length: about 19" / 50cm.Wire Length: 16"Ignition Coil:This coil can improve combustion efficiency, strengthen electrical performance.Match up exactly with original equipment in perfect fitness, just replace and ride again, easy to install.CDI boxFits: GY6 50cc-150cc 139QMB, 152QMI and 157QMJ engines.Material: aluminum.Connector: AC, 6 Pin male plug.CDI dimension: about 70mm x 38mm x 30mm(L x W x H).Wire + plug length: about 160mm.Spark PlugModels: A7TC.Thread Diameter: 10mm.Hex Size: 5/8".Package included:1 x ignition coil.1 x CDI box.1 x spark plug.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 +/-1-3 cm.