Features: The test probe fits for standard 2mm plug test lead, it works with most test lead kits in the field, diagnostic devices and automotive testing and repair. Makes it easier to check circuits and piercing the insulation of wires, very handy tools for back probing of automotive electrical measurements. Length: approx 8.5cm/3.35in, Connector diameter: approx 2mm/0.1in, pin material: stainless steel. Test probes manipulate in the test more sensitive and more accurate, good quality and ultra-durable. Can be widely used about the non-destructive cable test in auto, teleco m, industry, etc. Package Includes: 1 Pair Test Probe Pins Specifications: Material: Stainless Steel+Nylon Connector diameter: approx 2mm/0.1in Length: approx 8.5cm/3.35in note: Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item.