High quality: 4mm banana plug to alligator clip test lead is made of copper, the alligator clip is made of stainless and PVC, a wide rage of test probes to meet our work, the probe come with rubber cap to protect the tip and who handling it. Apply to : Excellent back probe kit can not only be used for car, automotive, vehicle electrical testing, diagnostics, irreplaceable troubleshooting, but also can be used in physics laboratories, schools, homes and industries. Can be Used with your multimeter to back probe harness connectors, and will not damage connectors or wires when used correctly. Colorful Test Leads - The probes have 5 different colors so at a glance you can differentiate different circuits and also keep scope leads color coordinated with the channel leads. Alligator clip can grip the accessory firmly, the material is copper, which is nickel plated, strong and has a very bull spring. the open maximum is 10mm. There may be slight color difference or difference between the actual product and it does not affect the use. Colour:Photo Color Material:plastic Package Contents: 41x Multimeter Test Lead Kit 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.