High quality, professional and reliable test accessories. The COP extension line can be used for any oscilloscope which can display the ignition waveform. High quality and professional test accessories for ignition systems. Coil-on- cord with earth cord are the simple accessory that allow you to take accurate secondary ignition measurements on Coil-on-Plug ignition systems. Coil-on- cords are designed to aid diagnostics on secondary ignition circuits by allowing an HT measurement to be made when there are no, or limited access, to any spark plug leads. Lead Length: Earth Cord:550mm/21.7in Coil-on- Cord:620mm/24.4in Item Weight:.104.7g/3.7oz Note:Due to different product batches, the appearance may be different, which does not affect use. Colour:Black Material:Plastic+Metal Package Contents: 1 x Coil-on- Cord 1 x Earth Cord 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.